life in 7d

I bought my first dslr camera a couple of years ago, secondhand, from a friend.  I've learned and loved that little rebel xti, but the time had come move on.  For a year I've saved all the money I could and, finally, I had enough to move up to the Canon 7d.  From 8MP to 18MP.  My trusty 4GB Compact Flash card only holds half the pictures it used to.  I'm geeking out on it. Oh boy, I need more time to learn it, but already, I'm all in.