Git: Procedure to push and pull

Thanks Matt (copied from issue #51)

1. Download git - Link
2. Add git to PATH
3. (Optional) Download git desktop - Link
4. Go to the directory you wish to make a folder with code (Repository)
5. git clone to copy a repo into a local folder
6. cd into the created folder with the repo
7. git checkout -b "" to create a new branch
8. Edit code
9. git add Filename_you_edited or git add . to add all files
10. git commit -m "COMMENT WHAT YOU DID"
11. git push
12. git checkout main to return to the main branch
13. Make a new pull request on GitHub.
14. git branch -d branch_name to delete from terminal
15. git pull to pull in other people's changes
16. git branch to see all available branches