There is some good PLO advice at
www.winningonlinepoker.com. The Ciaffone books are highly recommended.
I would fold both these hands pre-flop. In Hand 1, you are behind to some holding a pair of queens or holding a queen and a five. Getting two callers behind you on the turn is not good news, but then again your bet was small. You might have to check and fold on the river. In Hand 2, I think I would check the turn as well with all the two flush draws and straight on the board.