I'm considering buying Parachute and Flow, but I have a few questions about the latter. Its author has written more than one book on the topic, so I'd like to know:

a) Is this the only book among his publications that I should read? b) ...and if not, which ones should I read and what's the appropriate order? c) Are you recommending this particular book over the others by Csíkszentmihályi because you've read them all and consider it the best, or because you've only read the one and found it worth the time even in isolation?