Well congrats on the new rifle! I picked one up in .22lr about 4 months ago and I've put over 5000 rounds through it already, freakin' love the little thing. They are so much fun.
As for ammo, it'll eat anything. I'd personally stay away from Remington's Thunderduds, because they're duds, and Bucket O' Bullets because they are somewhat inconsistent but more importantly DIRTY. I have two buckets still and they have been relegated to bolt-action duty only as bolt-guns are much easier to clean, in my opinion.