Hey man, good luck, and remember a few key things during basic:
1. Always lend a helping hand to your buddies, and always be squared away doing what's RIGHT, not what's EASY. All it takes is one act to be labeled as a sh*t bag, and its downhill from there. Plus, you need to absorb as much valuable training as possible.
2. Keep up with PT. Any downtime (the very little bit) you get at the end of the training day can be used for a good 20 min. of pushups, running, or better yet, weights. My PT score went from a 278 to a 297 in 2 months just by lifting...helped out all my events.
3. Unless you're already married, DON'T DO IT until you're a few years into your service. I can't tell you how many of us have been divorced because the gal can't take the pressures of being an Army wife. Its a sad cold fact, but we've had 9 guys in my company since January get a divorce. If you're single, ENJOY IT. You'll be working too much and getting put on too many **** details to have to worry about a relationship.
4. HAVE FUN. Yea, you'll be in the suck for a good while, but the friends you make, the awesome training you receive, and the fact that you can look back and say "Wow, I'm doing what most Americans wouldn't dare do" will be worth it. I'd say basic and Airborne were the 2 highlights of my Army experience.
Good luck man, and keep us posted if you get a chance. I salute you for your service.