67 words (approximately 1 min)

Add Files

git add path # adds path to Staging

Removing Files From Tracking and Working Directory

git rm --cached <file> # untrack file; ADD FOLDER TO .gitignore FIRST
git rm -r --cached <folder> # untrack folder; ADD FOLDER TO .gitignore FIRST
git rm <file> # delete and untrack <file>; at next commit, file will be removed and no longer tracked

Moving/Renaming Files

git mv <from> <to>