diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 816b785..e1a6213 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,9 +30,26 @@ jobs:
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}
+      - uses: julia-actions/cache@v1
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
       - uses: codecov/codecov-action@v2
         with:
           files: ./lcov.info
+  docs:
+    name: Documentation
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: '1'
+      - uses: julia-actions/cache@v1
+      - name: Install dependencies
+        run: julia --project=docs -e 'using Pkg; Pkg.instantiate()'
+      - name: Build and deploy
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
+        run: julia --project=docs --color=yes docs/make.jl
diff --git a/.gitignore b/.gitignore
index b067edd..d6b4b1c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /Manifest.toml
+/docs/build/
diff --git a/docs/Makefile b/docs/Makefile
new file mode 100644
index 0000000..8dd5797
--- /dev/null
+++ b/docs/Makefile
@@ -0,0 +1,11 @@
+SRCDIR:=$(shell dirname $(abspath $(firstword $(MAKEFILE_LIST))))
+
+default: livedocs
+
+instantiate:
+	julia --project=${SRCDIR} -e 'using Pkg; Pkg.instantiate()'
+
+livedocs: instantiate
+	julia --project=${SRCDIR} -e 'using LiveServer; LiveServer.servedocs(; foldername=pwd())' -- liveserver
+
+.PHONY: default instantiate livedocs
diff --git a/docs/Manifest.toml b/docs/Manifest.toml
new file mode 100644
index 0000000..8c63045
--- /dev/null
+++ b/docs/Manifest.toml
@@ -0,0 +1,306 @@
+# This file is machine-generated - editing it directly is not advised
+
+julia_version = "1.7.2"
+manifest_format = "2.0"
+project_hash = "7c98a97551e318432a6ba3bc3fd4758623a247ac"
+
+[[deps.ANSIColoredPrinters]]
+git-tree-sha1 = "574baf8110975760d391c710b6341da1afa48d8c"
+uuid = "a4c015fc-c6ff-483c-b24f-f7ea428134e9"
+version = "0.0.1"
+
+[[deps.ArgTools]]
+uuid = "0dad84c5-d112-42e6-8d28-ef12dabb789f"
+
+[[deps.Artifacts]]
+uuid = "56f22d72-fd6d-98f1-02f0-08ddc0907c33"
+
+[[deps.Base64]]
+uuid = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"
+
+[[deps.CEnum]]
+git-tree-sha1 = "eb4cb44a499229b3b8426dcfb5dd85333951ff90"
+uuid = "fa961155-64e5-5f13-b03f-caf6b980ea82"
+version = "0.4.2"
+
+[[deps.CompilerSupportLibraries_jll]]
+deps = ["Artifacts", "Libdl"]
+uuid = "e66e0078-7015-5450-92f7-15fbd957f2ae"
+
+[[deps.Dates]]
+deps = ["Printf"]
+uuid = "ade2ca70-3891-5945-98fb-dc099432e06a"
+
+[[deps.Distances]]
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+git-tree-sha1 = "3258d0659f812acde79e8a74b11f17ac06d0ca04"
+uuid = "b4f34e82-e78d-54a5-968a-f98e89d6e8f7"
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+
+[[deps.Distributed]]
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+uuid = "8ba89e20-285c-5b6f-9357-94700520ee1b"
+
+[[deps.DocStringExtensions]]
+deps = ["LibGit2"]
+git-tree-sha1 = "b19534d1895d702889b219c382a6e18010797f0b"
+uuid = "ffbed154-4ef7-542d-bbb7-c09d3a79fcae"
+version = "0.8.6"
+
+[[deps.Documenter]]
+deps = ["ANSIColoredPrinters", "Base64", "Dates", "DocStringExtensions", "IOCapture", "InteractiveUtils", "JSON", "LibGit2", "Logging", "Markdown", "REPL", "Test", "Unicode"]
+git-tree-sha1 = "7c98cab82668f33299b195c1940690b2ec3a0ac2"
+repo-rev = "master"
+repo-url = "https://github.com/JuliaDocs/Documenter.jl.git"
+uuid = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
+version = "0.28.0-DEV"
+
+[[deps.Downloads]]
+deps = ["ArgTools", "LibCURL", "NetworkOptions"]
+uuid = "f43a241f-c20a-4ad4-852c-f6b1247861c6"
+
+[[deps.HYPRE]]
+deps = ["CEnum", "HYPRE_jll", "Libdl", "MPI", "PartitionedArrays", "SparseArrays", "SparseMatricesCSR"]
+path = ".."
+uuid = "b5ffcf37-a2bd-41ab-a3da-4bd9bc8ad771"
+version = "1.0.0"
+
+[[deps.HYPRE_jll]]
+deps = ["Artifacts", "JLLWrappers", "LAPACK_jll", "LazyArtifacts", "Libdl", "MPICH_jll", "MPIPreferences", "MPItrampoline_jll", "MicrosoftMPI_jll", "OpenBLAS_jll", "OpenMPI_jll", "Pkg", "TOML"]
+git-tree-sha1 = "ed07e4165a837e4606bc5dfbb6536ab0ec798ab8"
+uuid = "0a602bbd-b08b-5d75-8d32-0de6eef44785"
+version = "2.23.0+1"
+
+[[deps.IOCapture]]
+deps = ["Logging", "Random"]
+git-tree-sha1 = "f7be53659ab06ddc986428d3a9dcc95f6fa6705a"
+uuid = "b5f81e59-6552-4d32-b1f0-c071b021bf89"
+version = "0.2.2"
+
+[[deps.InteractiveUtils]]
+deps = ["Markdown"]
+uuid = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
+
+[[deps.IterativeSolvers]]
+deps = ["LinearAlgebra", "Printf", "Random", "RecipesBase", "SparseArrays"]
+git-tree-sha1 = "1169632f425f79429f245113b775a0e3d121457c"
+uuid = "42fd0dbc-a981-5370-80f2-aaf504508153"
+version = "0.9.2"
+
+[[deps.JLLWrappers]]
+deps = ["Preferences"]
+git-tree-sha1 = "abc9885a7ca2052a736a600f7fa66209f96506e1"
+uuid = "692b3bcd-3c85-4b1f-b108-f13ce0eb3210"
+version = "1.4.1"
+
+[[deps.JSON]]
+deps = ["Dates", "Mmap", "Parsers", "Unicode"]
+git-tree-sha1 = "3c837543ddb02250ef42f4738347454f95079d4e"
+uuid = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
+version = "0.21.3"
+
+[[deps.LAPACK_jll]]
+deps = ["Artifacts", "CompilerSupportLibraries_jll", "JLLWrappers", "Libdl", "Pkg", "libblastrampoline_jll"]
+git-tree-sha1 = "b1cccaf9742bb82f2b3de81c510688e491d6e922"
+uuid = "51474c39-65e3-53ba-86ba-03b1b862ec14"
+version = "3.9.0+0"
+
+[[deps.LazyArtifacts]]
+deps = ["Artifacts", "Pkg"]
+uuid = "4af54fe1-eca0-43a8-85a7-787d91b784e3"
+
+[[deps.LibCURL]]
+deps = ["LibCURL_jll", "MozillaCACerts_jll"]
+uuid = "b27032c2-a3e7-50c8-80cd-2d36dbcbfd21"
+
+[[deps.LibCURL_jll]]
+deps = ["Artifacts", "LibSSH2_jll", "Libdl", "MbedTLS_jll", "Zlib_jll", "nghttp2_jll"]
+uuid = "deac9b47-8bc7-5906-a0fe-35ac56dc84c0"
+
+[[deps.LibGit2]]
+deps = ["Base64", "NetworkOptions", "Printf", "SHA"]
+uuid = "76f85450-5226-5b5a-8eaa-529ad045b433"
+
+[[deps.LibSSH2_jll]]
+deps = ["Artifacts", "Libdl", "MbedTLS_jll"]
+uuid = "29816b5a-b9ab-546f-933c-edad1886dfa8"
+
+[[deps.Libdl]]
+uuid = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
+
+[[deps.LinearAlgebra]]
+deps = ["Libdl", "libblastrampoline_jll"]
+uuid = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+
+[[deps.Logging]]
+uuid = "56ddb016-857b-54e1-b83d-db4d58db5568"
+
+[[deps.MPI]]
+deps = ["Distributed", "DocStringExtensions", "Libdl", "MPICH_jll", "MicrosoftMPI_jll", "OpenMPI_jll", "Pkg", "Random", "Requires", "Serialization", "Sockets"]
+git-tree-sha1 = "d56a80d8cf8b9dc3050116346b3d83432b1912c0"
+uuid = "da04e1cc-30fd-572f-bb4f-1f8673147195"
+version = "0.19.2"
+
+[[deps.MPICH_jll]]
+deps = ["Artifacts", "CompilerSupportLibraries_jll", "JLLWrappers", "LazyArtifacts", "Libdl", "MPIPreferences", "Pkg", "TOML"]
+git-tree-sha1 = "089ec72dbf7d7a853626f438d140d0a642ddbda4"
+uuid = "7cb0a576-ebde-5e09-9194-50597f1243b4"
+version = "4.0.2+4"
+
+[[deps.MPIPreferences]]
+deps = ["Libdl", "Preferences"]
+git-tree-sha1 = "49f10d34284610c125421c7a4e6f913e4bc00897"
+uuid = "3da0fdf6-3ccc-4f1b-acd9-58baa6c99267"
+version = "0.1.3"
+
+[[deps.MPItrampoline_jll]]
+deps = ["Artifacts", "CompilerSupportLibraries_jll", "JLLWrappers", "LazyArtifacts", "Libdl", "MPIPreferences", "Pkg", "TOML"]
+git-tree-sha1 = "17fd6861c826f96c5cc4bf390c046db3b3b694e0"
+uuid = "f1f71cc9-e9ae-5b93-9b94-4fe0e1ad3748"
+version = "5.0.0+0"
+
+[[deps.Markdown]]
+deps = ["Base64"]
+uuid = "d6f4376e-aef5-505a-96c1-9c027394607a"
+
+[[deps.MbedTLS_jll]]
+deps = ["Artifacts", "Libdl"]
+uuid = "c8ffd9c3-330d-5841-b78e-0817d7145fa1"
+
+[[deps.MicrosoftMPI_jll]]
+deps = ["Artifacts", "JLLWrappers", "Libdl", "Pkg"]
+git-tree-sha1 = "a16aa086d335ed7e0170c5265247db29172af2f9"
+uuid = "9237b28f-5490-5468-be7b-bb81f5f5e6cf"
+version = "10.1.3+2"
+
+[[deps.Mmap]]
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+
+[[deps.MozillaCACerts_jll]]
+uuid = "14a3606d-f60d-562e-9121-12d972cd8159"
+
+[[deps.NetworkOptions]]
+uuid = "ca575930-c2e3-43a9-ace4-1e988b2c1908"
+
+[[deps.OpenBLAS_jll]]
+deps = ["Artifacts", "CompilerSupportLibraries_jll", "Libdl"]
+uuid = "4536629a-c528-5b80-bd46-f80d51c5b363"
+
+[[deps.OpenMPI_jll]]
+deps = ["Artifacts", "CompilerSupportLibraries_jll", "JLLWrappers", "LazyArtifacts", "Libdl", "MPIPreferences", "Pkg", "TOML"]
+git-tree-sha1 = "f603a060218ca6818055be3608d4969e937d81bb"
+uuid = "fe0851c0-eecd-5654-98d4-656369965a5c"
+version = "4.1.3+2"
+
+[[deps.Parsers]]
+deps = ["Dates"]
+git-tree-sha1 = "0044b23da09b5608b4ecacb4e5e6c6332f833a7e"
+uuid = "69de0a69-1ddd-5017-9359-2bf0b02dc9f0"
+version = "2.3.2"
+
+[[deps.PartitionedArrays]]
+deps = ["Distances", "IterativeSolvers", "LinearAlgebra", "MPI", "Printf", "SparseArrays", "SparseMatricesCSR"]
+git-tree-sha1 = "88ff2293fd57089a4036a3056ba058ae9806111b"
+uuid = "5a9dfac6-5c52-46f7-8278-5e2210713be9"
+version = "0.2.10"
+
+[[deps.Pkg]]
+deps = ["Artifacts", "Dates", "Downloads", "LibGit2", "Libdl", "Logging", "Markdown", "Printf", "REPL", "Random", "SHA", "Serialization", "TOML", "Tar", "UUIDs", "p7zip_jll"]
+uuid = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+
+[[deps.Preferences]]
+deps = ["TOML"]
+git-tree-sha1 = "47e5f437cc0e7ef2ce8406ce1e7e24d44915f88d"
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+
+[[deps.Printf]]
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+[[deps.REPL]]
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+
+[[deps.Random]]
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+
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+
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+
+[[deps.SparseArrays]]
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+
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+[[deps.Statistics]]
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+
+[[deps.StatsAPI]]
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+
+[[deps.SuiteSparse]]
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+
+[[deps.TOML]]
+deps = ["Dates"]
+uuid = "fa267f1f-6049-4f14-aa54-33bafae1ed76"
+
+[[deps.Tar]]
+deps = ["ArgTools", "SHA"]
+uuid = "a4e569a6-e804-4fa4-b0f3-eef7a1d5b13e"
+
+[[deps.Test]]
+deps = ["InteractiveUtils", "Logging", "Random", "Serialization"]
+uuid = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[[deps.UUIDs]]
+deps = ["Random", "SHA"]
+uuid = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
+
+[[deps.Unicode]]
+uuid = "4ec0a83e-493e-50e2-b9ac-8f72acf5a8f5"
+
+[[deps.Zlib_jll]]
+deps = ["Libdl"]
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+
+[[deps.libblastrampoline_jll]]
+deps = ["Artifacts", "Libdl", "OpenBLAS_jll"]
+uuid = "8e850b90-86db-534c-a0d3-1478176c7d93"
+
+[[deps.nghttp2_jll]]
+deps = ["Artifacts", "Libdl"]
+uuid = "8e850ede-7688-5339-a07c-302acd2aaf8d"
+
+[[deps.p7zip_jll]]
+deps = ["Artifacts", "Libdl"]
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diff --git a/docs/Project.toml b/docs/Project.toml
new file mode 100644
index 0000000..92f1f35
--- /dev/null
+++ b/docs/Project.toml
@@ -0,0 +1,3 @@
+[deps]
+Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
+HYPRE = "b5ffcf37-a2bd-41ab-a3da-4bd9bc8ad771"
diff --git a/docs/make.jl b/docs/make.jl
new file mode 100644
index 0000000..08ee1d3
--- /dev/null
+++ b/docs/make.jl
@@ -0,0 +1,28 @@
+const liveserver = "liveserver" in ARGS
+
+if liveserver
+    using Revise
+    Revise.revise()
+end
+
+using Documenter
+using HYPRE
+
+makedocs(
+    sitename = "HYPRE.jl",
+    format = Documenter.HTML(
+        canonical = "https://fredrikekre.github.io/HYPRE.jl/stable",
+    ),
+    modules = [HYPRE],
+    pages = Any[
+        "Home" => "index.md",
+    ],
+    draft = liveserver,
+)
+
+if !liveserver
+    deploydocs(
+        repo = "github.com/fredrikekre/HYPRE.jl.git",
+        push_preview = true,
+    )
+end
diff --git a/docs/src/index.md b/docs/src/index.md
new file mode 100644
index 0000000..f05b00d
--- /dev/null
+++ b/docs/src/index.md
@@ -0,0 +1,12 @@
+# HYPRE.jl
+
+Documentation for HYPRE.jl
+
+```@docs
+HYPRE.solve!
+HYPRE.solve
+```
+
+```@docs
+HYPRE.HYPRESolver
+```
diff --git a/src/solvers.jl b/src/solvers.jl
index 2eec3ef..beac282 100644
--- a/src/solvers.jl
+++ b/src/solvers.jl
@@ -11,11 +11,11 @@ abstract type HYPRESolver end
 # TODO: This should allocate x using the owned cols instead of rows of A/b, but currently
 #       it is assumed these are always equivalent.
 """
-    solve(solver::HYPRESolver, A::HYPREMatrix, b::HYPREVector)
+    solve(solver::HYPRESolver, A::HYPREMatrix, b::HYPREVector) -> HYPREVector
 
-Solve the linear system `A x = b` using `solver` and return the solution vector.
+Solve the linear system `A x = b` using `solver` and return the approximate solution.
 
-This method allocates the initial guess/output vector `x`, initialized to 0.
+This method allocates an initial guess/output vector `x`, initialized to 0.
 
 See also [`solve!`](@ref).
 """
@@ -25,6 +25,7 @@ solve(solver::HYPRESolver, A::HYPREMatrix, b::HYPREVector) = solve!(solver, zero
     solve!(solver::HYPRESolver, x::HYPREVector, A::HYPREMatrix, b::HYPREVector)
 
 Solve the linear system `A x = b` using `solver` with `x` as the initial guess.
+The approximate solution is stored in `x`.
 
 See also [`solve`](@ref).
 """