To open a repository there are three options:
When using git we should commit changes regularly with useful commit messages. We can do this easily via git extensions by choosing
Commands>Commit. This will open a window where we can choose which files which should be added to the commit via staging. Only files that have been changed appear in the staging area. A commit message should be added in the box in the bottom right of the window before clicking either
Commit (to commit changes locally) or
Commit & Push (to commit changes and push those to the remote repository on Github).
You can add a new branch by selecting
Commands>Create branch. This will open a window where you can choose a name for your new branch. Clicking
Create branch will create the branch and checkout to it if the option was selected.
The interface of git extensions gives you a visual summary of the changes have been made to the various branches within a repository.
When you want to merge the changes from one branch into another you can select
Commands>Merge branches and select which branch you want to merge into the current branch.