Add the section "Changing the History"

Add some examples to work with and to change the repositorie's history.
Add the section "Branching"

Add some examples how to work with branches.
Add the section "Tagging"

Add some examples how to work with tags.
Add the section "Remote Repositories"

Add some examples how to work with remote repsitories.
Add the section "Patches"

Add some examples how to work with patches.
Add the section "Advanced Syntax"

Add some examples how to work with advanced syntax such as the "^", "~" and
the ".." notation.
Add the section "Stash"

Add some examples how to work with the git stash.
Add the section "Searching"

Add some examples how to search in tracked files and log messages.