1. The difference between Reserve and Guard? Reserve is Federal, Guard is State (this was news to me);
2. Signing up for the Guard or Reserve is typically a 6 year commitment;
3. Your commitment begins when you sign up but you can defer your enlistment for up to a year;
4. You can sign up having completed your junior year in high school and defer training until after you graduate (which I think you have to anyway) but that's 1 of your 6 years down already;
5. Reservists get tuition assistance of up to $9,000/year;
6. Assuming a 4 year college degree and early enlistment, you can graudate with 5 years of your 6 year commitment done;
7. For one weekend a month and 2 weeks a year, you typically get $250-300/month (plus active duty pay where appropriate);
8. You also get medical and dental insurance.
As ridiculous as the US college system is in terms of cost, I'm happy things like this exist to at least give people more options. If you go to college, the above can amount to $50,000 plus benefits over a 6 year period.