Umm... 2LLL is OLL-PLL. I think you meant 2L OLL. If that is the case, I really like joel van noort's page. solvethecube.co.uk is his site, and he has an OLL tutorial that groups the algorithms in similar groups. He starts off with sunes and ones just like it. I've almost learned them all, but I haven't spent a ton of time.
I'd recommend going through the OLL's and checking for easy-to-learn cases first. Try to get all of those out of the way. By that I mean usually the shortest ones, or those that have some very easy-to-remember sequence of moves... Then go on to those that you see very often, and then just learn the rest. Also, if you do the 2look OLL, maybe you should learn those few that have no edges oriented, because in those cases you need to flip edges twice before reducing to one of the 7 cases.
I am normally against advertising my own Youtube videos like this, but I made a short tutorial on tips/tricks for OLL learning that might help you out as well http://www.youtube.com/watch?v=I1Lb-eFXzro
some of it is basic stuff, some of it is more subtle. In any case, I got a couple of good comments about it, so see if it helps at all