Conferences are expensive. I'd go with books, and local conferences that are cheap and don't cost a lot of money in terms of hotels/airfare/etc...

Another way of looking at stuff changing really fast: wait until it settles down some until you jump on board, or you risk wasting your time. I remember in the 90ies when CORBA was going to be the "next big thing". Glad I didn't spend time learning that...