DFAS- See your LES or Travel Voucher online a few days *before* you get it in the mail (I personally think this is cool cuz at least I know I'm getting paid soon)

 

See your profile/retirement points/all kindsa goodies about *you*

 

AKO page- get an AKO account if don't have one cuz you need it for lots of other army sites you may feel like loggin into

 

Correspondence Courses- Sign up for them, take tests online- easy way to get retirement or promotion points or learn stuff just because...