What are your best revision tips... for someone with an incredibly BAD memory?

I have my philosophy exam in 2 months times and beside from an essay to do it seems that I have quite a bit of time to study and revise. However, all the studying and time in the world won’t help if I can’t retain the information will it.

What are you best tips for revision and retaining information short and long term?

Oh yes and I have done a revision timetable…