Update guidelines

.github/PROCESS.md

@@ -15,3 +15,10 @@ We will do all that for you so you can focus on what is really interesting for y
    All commits are squashed on merge.
    Autogenerated squash commit's title and body should be manually replaced by PR's title and description; that includes both manual merges and auto-merges.
    Do not leave original commit messages in the squashed commit body.
+
+## Calls `to show and/or to explain`
+
+Having a call with someone explaining something what you already know and sharing knowledge with someone else, please multiply this knowledge to the benefit of others by writing a detailed article about the topic.
+Single 1-1 calls are good to check what you might have missed in the way - what seemed to you obvious and to other is not.
+
+Please also gather other people ideas since diversity and different opinoins expand our understanding and vision of the project.

CONTRIBUTING.md

@@ -21,6 +21,54 @@ git remote add upstream https://github.com/FerretDB/FerretDB.git
 
 ### Setting up the development environment
 
+In the CI there are checks that new code complies the imports sorted convention and that the code is gofmt-ed.
+To avoid failing PR checks, please setup your beloved text editor to gofmt files before push. Here provided some setup guides for VScode and Goland.
+You can also execute each time `task fmt lint`, run project -> fmt functions of the text editor or place in the `.git/hooks/pre-commit` file
+
+```shell
+#!/bin/sh
+
+exec task docs-fmt fmt lint
+```
+
+Please make sure your *.md files comply with <https://sembr.org>.
+You could also run `task docs-fmt`.
+
+### Visual Studio Code
+
+Follow [`vscode guideline`](https://code.visualstudio.com/docs/languages/go),
+Setting example:
+
+```json
+    "go.testOnSave": true,
+    "go.testFlags": [
+        "-v"
+    ],
+    "go.toolsEnvVars": {
+        "GO111MODULE": "on"
+    },
+    "go.formatTool": "goimports",
+    "go.lintOnSave": "package",
+    "go.toolsManagement.autoUpdate": true,
+    "[go]": {
+        "editor.formatOnSave": true,
+        "editor.defaultFormatter": "golang.go",
+        "editor.codeActionsOnSave": {
+            "source.organizeImports": true
+        }
+    },
+```
+
+### Goland
+
+* `Preferences -> Tools -> File watchers`
+* Click on the Add button and choose go fmt
+* Click on the OK button to enable it
+
+Do same with go imports.
+
+### Run
+
 To run development commands, you should first install the [`task`](https://taskfile.dev/) tool.
 You can do this by changing the directory to `tools` (`cd tools`) and running `go generate -x`.
 That will install `task` into the `bin` directory (`bin/task` on Linux and macOS, `bin\task.exe` on Windows).