The orion's star/ hunter's star is super easy if you do paper piecing... and even just regular piecing, and it's beautiful. Look up the pattern on quilterscache.com.
the double wedding ring is tougher because of the curved piecing. It's beautiful, but a pain to do... I've started 3 of them and gave up because it was taking too ong, haha.
There are instructions for te dwr in the tutorial section on this site :)