re: Poker & Should I start MTT'S?
I would highly suggest following tenbob's advice. With a $72 bankroll, you're not really even bankrolled for $5NL games. Now if that's the lowest game offered, then absolutlely start there and be a bit cautious as you build up.
Definitely search out some of the other BRM threads we have here as BRM is designed with a purpose in mind (which, essentially, is to give you a way of playing within the limits you can best afford while still giving yourself enough room to handle variance that will come along.
Oh, and those runner runners at 5NL happen at higher levels as well (which is why you should continue playing in the limits you're bankrolled for).