Adding/Deleting

git add file1 file2 ...
Add file1, file2, etc. to the project.
git add dir
Add all files under directory dir to the project, including subdirectories.
git add .
Add all files under the current directory to the project, including subdirectories.
git rm file1 file2 ...
Remove file1, file2, etc. from version control and the working tree.
git rm --cached file1 file2 ...
Remove file1, file2, etc. from version control, but not from the working tree.