This one you need before starting the course:
http://www.smartcockpit.com/docs/A32...For_Pilots.pdf
(or any newer edition of).
Once you start, invest a little and go print a physical copy of FCTM and QRH section "SOP", laminate the latter.
You'll have a blast, do not exhaust yourself unnecessarily. Self-learning on the Airbus could be detrimental to the end-result.