To initialize get started with Galaxy-Sense, you'll need to get familiar with Git and Repo.

https://sites.google.com/a/android.com/opensource/download/using-repo

To initialize your local repository using the CyanogenMod/Galaxy-Sense trees, use a command like this:

repo init -u git://github.com/Chiledog/android.git -b gingerbread

Then to sync up:

repo sync

Then check the code and

./build.sh kernel

i.e.

./build.sh galaxys kernel