Blog to create pull request in GitHub

GitHub is a web-based version-control and collaboration platform for software developers.
Pull requests are interactions to suggest/request changes in a GitHub repository.

Blog must include:
A brief introduction on basic +_GitHub commands _+required. (eg: making commits from two branches equal etc)
Major commands must be highlighted and concepts must be defined properly.
_+Introduction to pull request tab, issues tab in Github.
+_
Screenshots must be inserted.

Submission Steps:
Submissions can be done in a +public blogging platform(+Eg: Wordpress, medium)/as pdf