I highly suggest the ITTO App over at Brainbok.
www.brainbok.com/
, all you need is the $39.99 package, it includes an interactive listing of all ITTOs and the associated processes. No, it will not make it EASY to memorize them, but I find it helps. If I were you, I would focus on the Inputs and Outputs of each process using the tool. Categorize some of them, such as Work Performance Data, Information, and Reports, Knowing that flow is important and it's easy to learn. Data comes from Direct Project Work, and flows to all Monitor and Controlling processes. Information comes from all Controlling Processes and flows to Monitor and Control Project Work, Reports flow out of M&C PW and flows to a few different places. Anyway, Brainbok is good, it also has quizzes as part of that package, quick questions on process flow.