git add

git add selects changes to include in the next commit; it does not create the commit yet.

What you will learn

What the staging area is for
How to select and review files

Minimal example

git status; git add index.html; git diff --staged; git commit -m "Update the page"

Check the status, stage the intended file, review the staged diff, and then commit it.

Common mistakes

git add alone does not save a commit.
Review the staged diff before committing.
Use a specific path when git add . would select too much.