The A's will pick at #20 and #63 today, rounds 3-10 (97, 128, 158, 188, etc etc) tomorrow, then rounds 11-40 on Wednesday.
The A's have been linked almost exclusively to college players so far, from pitchers like Walker Beuhler to hitters like Donnie Dewees and Kevin Newman. The general thought is that this is a "weaker", less low risk/high reward type players, class than previous years. Something this draft does have is overall and up the middle depth.
Here's a roundup of the players I took during the Community Mock Draft at John Sickels' site.