For opensource projects, choose a license

• https://choosealicense.com/

Create a good README for your projects

• https://www.makeareadme.com/

Keep a Change log for your project

• https://keepachangelog.com/en/1.0.0/

A way to manage project versions

• https://semver.org/

How to write Release Notes (Release Notes are different from Change Log)

• https://theproductmanager.com/topics/software-release-notes/