[Richie Rich]

Transitioning from LL to NL will require several adjustments to your game. First off, A5s should be played like a small pair. If the flop doesn't look kind (i.e. you don't see any flush/straight draws, and an A & 5 didn't fall), then you should be willing to let it go. Your Aces/weak kicker is not likely to be the winning hand. Try to stick with Sklansky's Group 1 - 4 hands, loosening up a little bit on CO or the button. Playing patiently is of key importance.

(In LL you can call all the way to the river in hopes that he only has KK or you magically hit a second pair. But in NL, you cannot do the same...it will cost you too much in the long run.)

Still wondering how to beat this guy? In NL, it's the secret of trapping him. Since he enters a number of pots quite loosely, just wait until you have a very good hand and pop him on the turn/river. Now this won't work out in your favor 100% of the time, but the odds are still in your favor.

Also, since you've got position on him for a couple of hands (three, I believe), be sure to play some mid suited connectors to mix up your play a bit. If he has a good read on you, you have to counter-act that by adding a few more hands to your arsenal (so that he doesn't have a clear read on you every time).

This guy can't win every time. Let the other players be his victim, while you wait for the right time to make him your prey.