diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..fbfa210
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,21 @@
+root = true # false
+
+[*]
+# overrides perettier's useTabs
+indent_style = tab # space
+
+# overrides perettier's tabWidth
+# indent_size = 4 # whole number
+
+# overrides perettier's tabWidth
+tab_width = 1 # whole number
+
+end_of_line = lf # cr | crlf
+charset = utf-8 # latin1 | utf-8-bom | utf-16be | utf-16le
+
+trim_trailing_whitespace = true # false
+
+insert_final_newline = true # false
+
+# overrides perettier's printWidth
+max_line_length = 80
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..6313b56
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+* text=auto eol=lf
diff --git a/.prettierrc b/.prettierrc
new file mode 100644
index 0000000..2d37d80
--- /dev/null
+++ b/.prettierrc
@@ -0,0 +1,7 @@
+{
+	"singleQuote": true,
+	"trailingComma": "none",
+	"requirePragma": false,
+	"insertPragma": false,
+	"proseWrap": "always"
+}
diff --git a/.vscode/extensions.json b/.vscode/extensions.json
new file mode 100644
index 0000000..712ee78
--- /dev/null
+++ b/.vscode/extensions.json
@@ -0,0 +1,10 @@
+{
+	"recommendations": [
+		"golang.go",
+		"graphql.vscode-graphql-syntax",
+		"mtxr.sqltools",
+		"mtxr.sqltools-driver-sqlite",
+		"streetsidesoftware.code-spell-checker",
+		"editorconfig.editorconfig"
+	]
+}
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..3659cd5
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,11 @@
+{
+	"sqltools.useNodeRuntime": true,
+	"sqltools.connections": [
+		{
+			"previewLimit": 50,
+			"driver": "SQLite",
+			"database": "${workspaceFolder:YetAnotherToDoList}/YetAnotherToDoList.sqlite3",
+			"name": "development"
+		}
+	]
+}
diff --git a/CONTRIBUTIN.md b/CONTRIBUTIN.md
new file mode 100644
index 0000000..7418d07
--- /dev/null
+++ b/CONTRIBUTIN.md
@@ -0,0 +1,127 @@
+---
+gitea: none
+include_toc: true
+---
+
+# Contributing
+
+This is a personal project to learn new languages and technics and thus does not
+really have a future you could contribute to. You are however welcome to fork
+and modify it while following the guidelines and licenses in
+[COPYING.md](./COPYING.md).
+
+## Environment
+
+Preferred editor: [VSCodium](https://vscodium.com/) with some
+[extensions](./.vscode/extensions.json).
+
+For dependencies/tools, make sure to use the versions specified in
+[INSTALL.md#requirements](./INSTALL.md#requirements).
+
+## Coding conventions/formatting
+
+There is a [.editorconfig](./.editorconfig) file to use with compatible editors
+[1](https://editorconfig.org/#pre-installed), or with those who have plugins
+available [2](https://editorconfig.org/#download).
+
+Please use [prettier](https://prettier.io/) and the supplied
+[configuration](./.prettierrc) to format the following file types:
+
+- `.js`
+- `.vue`
+- `.css`
+- `.md`
+- `.yaml`
+- `.graphqls`, `.graphql`
+- `.json`
+
+Use the following formatters with the following types:
+
+- `.go` (use gofmt)
+
+No formatter specified for the following types (adapt to existing style):
+
+- `Makefile`
+- `.sql`
+- `.mod`, `.sum`
+
+Do **not** change the formatting of license texts (e.g.
+[COPYING.md](./COPYING.md)).
+
+### General
+
+- We indent using `tabs` (4 spaces wide).
+- We use single-quotes `'` where possible.
+- We use `LF` line endings (enforced by [.gitattributes](./.gitattributes)).
+- We use `UTF-8` encoding where possible.
+- We end files with an empty line.
+- We use the string `TODO` to mark bits of code that need improvement.
+- We use the string `DEBUG` to mark bits of code that are only for debugging
+  (remove before next commit).
+- We add (if possible) the following header to files that contain a reasonable
+  amount of self-written code or are essential to the project:
+
+  ```text
+  /*
+  YetAnotherToDoList
+  Copyright © YYYY name your@email
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, version 3.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program. If not, see <http://www.gnu.org/licenses/>.
+  */
+  ```
+
+### File specific rules
+
+#### Markdown (.md)
+
+- We add a single `h1` element per document (as a title of the document).
+- We use asterisks `*` for **bold** and _italic_, not underscores `_` .
+- We don't use citation blocks `>` for emphasis.
+- We end sentences with a full stop `.` .
+- We leave one space around backticks `` ` `` when used as inline code.
+- We add new lines around codeblocks ` ``` ` .
+- We indent using spaces (2 spaces wide).
+- We add a table of content (toc) in gitea's style where necessary:
+
+  ```
+  ---
+  gitea: none
+  include_toc: true
+  ---
+  ```
+
+#### YAML
+
+We indent using spaces (1 space wide).
+
+#### Bash (.sh)
+
+We use `env` in the shebang: `#!/usr/bin/env bash`.
+
+### File endings
+
+#### .yaml and .yml
+
+We use the `.yaml` file ending.
+
+#### .graphql and .graphqls
+
+- We use `.graphql` for writing client queries.
+
+- We use `.graphqls` for defining our graph scheme.
+
+## Commit messages
+
+- We write in all lowercase except for special names, e.g. `update Makefile`
+- We write in imperative mood, e.g. `add contribution guidelines`, not
+  `adding ... ` or `adds ... `.
diff --git a/README.md b/README.md
index 6222e1b..634d0fd 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,10 @@ Instructions on how to install can be found in [INSTALL.md](./INSTALL.md).
 
 Once installed, you might want to run the queries in [example.graphql](./example.graphql).
 
+## Contributing
+
+For contributing see [CONTRIBUTING.md](./CONTRIBUTIN.md).
+
 ## License
 
 [GNU GPLv3 only](./COPYING.md)