The AICPA is developing an IFRS Certificate Program. They have a number of self-study courses on IFRS in general, comparisons to U.S.GAAP, and individual topics like inventories, intangibles, impairment, EPS, etc. You can find information about the self-study courses here.
We ordered one of their self-study courses a while back. I didn't complete the course myself, but I have had good reviews from those who did.