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Mar28-12, 03:52 PM
P: 194
There's some good advice here already. A good idea is to just read books about subjects you think you're bad in, starting with the most basic stuff. Then, when you think you know how stuff works, move on to the next. And so on and so forth. Also, like genericus said, you won't really need a calculator because you're not going to do a lot of arithmetic. Instead of simply echoing what he said, here's a funny comic