Anoles are pretty cool lizards, I have one myself currently. You'll probably never find a breeder of them though, 99.99% of them are caught in the wild - they are pretty common throughout the US. Hardly worth breeding, considering they wholesale for 1.50 apiece.
He is going to need a UV light, one of the fluorescent fixtures will work fine as long as he can get within about 8" of it or so. They now make heat/uv lamps which cost around 40 bucks but are quite effective at giving both the needed heat and the needed UV.
I get most of my crickets and meal worms online at Reptilefood.com
. I've not had a problem with them thus far, of course, the UPS guy doesn't appreciate me much when he has to deliver the chirping boxes.
Anoles will turn darker colors in an attempt to absorb more warmth from the sun... so usually it means they are cold. Bright green is their normal color when out and about during the day.
Just say no to heat rocks, they suck horribly, get too hot (140 degrees or more) and you risk burning him. Even the newer ones with thermostats built in have been reported to fail and overheat.
Sexing them is generally not that difficult, males have a big colorful dewlap under their chin that they can unfold. You may be able to introduce a female friend to a male, but don't put two males together. They will fight. The only problem with putting more than one basking-type lizard together is that they compete for the best sun spots. Inevitibly it usually ends up with one being stressed and not getting all their necessary nutrients.
If you're not sure he has mites, I'd put him in a small container with a half inch of water in it or so... just let him soak for a bit and then check the water with a magnifying glass. See if you can see any mites. They look basically like little dirt particles with legs.
If he does have mites, I would keep him on paper towels until you're reasonably sure they are gone. The soil will just be a great breeding ground for them.
Erm... not sure what else to add... they are fun little pets, funny when they chase crickets around.