PT:
Do not worry too much. I was trained in Toulouse (the A320 was new to the company) and the FMGS Manual was only "leaked" to us when the Airbus line trainers came back to visit after 6 months from EIS.
If your sectors are long enough as mine used to, you can try inserting some (actually, plenty) P-D waypoints and see what the predictions are like over them on FPL-B.
Meanwhile, send me a PM.