I personally wouldn't play any cash tables if I were you 'BUT' I don't think you're an idiot (not at all). Thing is.. even playing 2nl you can easily lose a few buyins in short order & if you're not playing to attempt to stack your opponent's off I think you'd be likely nitting it up too much (alot of new players play cash tables as if they're tournaments... they alot different from one another).
Try to learn one or the other (personally I think you'd be way better off playing the 70cent satellites to the BLT, where Top3 get $2.20). With a basic understanding of SNG Strategy you could easily do well in them. Read up on SNG play, check out a video or two and then start hammering away at them imo.
Last comment re: $10 bankroll. Sure it's too small.. because there's obviously a good chance of goin' broke... but.. I've actually built up a few bankrolls on a few different sites, each starting out with a freeroll cash of ~$2 (one site I built to over $500, another over $600 & another ~$150). I don't play much on any of those accounts these days (oddly enough... lol) because I just don't like the game selection on them.
You can do it! It's not a 100% given by any means... but it is quite possible!
See if you can pick up a book at the library. Try to get ahold of Phil Gordon's Little Green Book. AND.. read up on SNG Strategy (find a guide for SNG's if you can).
gl