You read the summaries after completing the ECAM actions, starting with the cruise portion where you get the information to decide on which place to divert. After your approach briefing, read the landing and go around portions. Finally, before reading the approach checklist, read the approach summary. That sequence works well, you get the information you need in a logical way per phase of flight.
In B+Y Hyd lo
pr, you lower the gear by gravity to preserve the Green hydraulic system integrity. Regards.