To view the status of your and others' patches, visit LineageOS Code Review
To get started with Android/LineageOS, you'll need to get familiar with Git and Repo.
To initialize your local repository using the PureDroidOS trees, use a command like this:
repo init -u git://github.com/PureDroidOS/android.git -b cm-14.1
Then to sync up:
repo sync
Please see the LineageOS Wiki for building instructions.
All supported devices are built weekly and periodically as changes are committed to ensure the source trees remain buildable.