GMAT is not so easy, i've done it. Went and did a masters in finance and now trade for myself, trying the back door way! You could learn to trade an invest with a smaller broker, this is what i did for a few years. You'll learn a heck of a lot about trading this way. One thing i will promise you is u don't need to have a phD in anything to be a good trader. My programmer is trying to get me to flog some of my systems to various brokerage firms..... lol.... no phD here..........