Here are a couple of great anthias articles from ReefKeeping:

[link]Part 1[link]
[link]Part 2[link]

The author goes into a lot of detail in Part 2 on the individual species and their care, highlighting which ones are easier, which ones are harder, and why.

I've also read that it's generally better to get an odd number - the pecking order seems to settle out better that way. I picked up three lyretails late last year, and there was a clearly dominant individual and a clearly submissive one, so the turf wars were minimal.