To get started with Android/PureKat, you'll need to get familiar with Git and Repo.
To initialize your local repository using the CyanogenMod trees, use a command like this:
repo init -u git://github.com/PureKat/android.git -b cm-11.0
Then to sync up:
repo sync
Please see the CyanogenMod Wiki for building instructions.
cd vendor/cm
. get-prebuilts
cd ../../
. build/envsetup.sh
lunch cm_vision-userdebug
mka bacon