Git branching allows for isolated development, better collaboration, and safe experimentation.To create a new branch, use the commands 'git branch <branch-name>' and 'git checkout <branch-name>'.To merge a branch into the main branch, use the command 'git merge <branch-name>'.To delete a branch, use the command 'git branch -d <branch-name>' if already merged, or 'git branch -D <branch-name>' to force delete.