Three basic Git commands

1) git add -A

git add -A is equivalent to  git add .; git add -u.

git add .  ( This will add all files but does not remove files )
git add -u ( This will add only changes but will not add any new files created )

So we use

git add -A ( this will take care of both the commands )

2) git commit -m “Commit changes text ex: I have added new function xyz to the file

3) git push origin  

example of branch name : develop

Another 3 frequently used commands include :

git pull
git status 
git merge origin/Branchname