To use these, you first clone the git repo and then make a symlink to .emacs.d. like this:
cd git clone git://github.com/jlouis/jlouis-emacs-conf.git ln -s jlouis-emacs-conf .emacs.d
You get the idea, surely
In addition, you might want to start from other projects: I have been heavily inspired by the emacs-starter-kit for instance.
There are also the 20seven-emacs by gregnewman which I have drawn ideas from as well.
Finally, you can search for "emacs configuration" on github. There is a plethora!