If you're not going to be spending any real money in MyCareer, then it's important to be smart with your VC. (On the flipside, if you're not interested in grinding for the VC, then be smart with your real money.) Especially in the early going, you'll want to use every point of VC you get to improve your character's ratings and abilities. The shoes, tattoos, jewelry, haircuts, and all that other stuff will tempt you for sure, but there's no sense in being a well-dressed basketball player who can't exactly play basketball.