Download and print the Category C PDU Logfile (PDF) to keep track of how many hours of The PM Podcast you have listened to. Every time you listen to a new episode simply take out a pen and fill in the next line. Print a new page when needed. Once you have reached the minimum number of listening required (watch episode 150 to learn how much that is...) then you can claim your PDUs with PMI. Keep your handwritten notes in case you are audited by PMI after claiming the PDUs.