Documentation Writing Guidelines

Best Practices

Check the spelling and grammar, even if you have to copy and paste from an external source.
Use simple sentences. Easy-to-read sentences mean the reader can quickly use the guidance you share.
Try to express your thoughts in a concise and clean way.
Don't abuse code format when writing in plain English.
Follow Google developer documentation style guide.
Check the meaning of words in Microsoft's A-Z word list and term collections (use the search input!).

Google provides a free course for technical writing.