well
you dont really need to prepare before doing the course allthough any kinda study is beneficial ... subjects which interests and those which have much more simpler explanation can be gone thru... i like meteorology and found it pretty interestng ... but rather than that u will do just fine in those 6-7 weeks of training they give u at the colleges.... the course isntdifficult but itss too much... i am just out if the course so i culd give u this idea...
6-7 weeks will be a sacrifice weeks as i may put it ...LOL but its true .. best of luck