Hey, How's it Going?

Hi, my name is Andrew and I'm currently a Sophomore at the University of Connecticut (also live in a nearby town, but live in the dorm during the year). I've been looking at this sport for a while now, considering whether or not I should get involved (although admittedly, there has been little thought of not getting involved haha). I've got a few of my friends on board for this adventure as well. We've been into skiing, snowboarding, ski-dooing, mountain biking (as well as making custom dirt jumps), but as you can see, a majority of those activities are during the winter and we want something with a little more speed and excitement.

I currently don't have a bike, which is why I'm looking around the net and am trying to figure out the difference between brands, materials, and components. I'm pretty clueless in this regard, but i've got a bit of time before this coming spring (which is when I plan on purchasing a bike). I've been looking around and am currently looking at a four-stroke engine for fuel efficiency purposes, although I am a bit concerned regarding the power difference between the two stroke and four stroke.

The terrain I eventually wish to ride on will be moderately rough. It'll be pretty hilly and eventually I want to be able to hit jumps. These are my goals and some of them may take years to perfect, but I look forward to the challenge.

I look forward to talking a bit on here. Thanks for the warm welcome!