I agree with elefantfresh that Andorra is being criticised unfairly here. I've only been twice but enjoyed it even though my favourite resorts are in France and Switzerland. For the money and if you're relatively inexperienced, it's hard to beat Andorra. If you stay in one of the smaller villages/hamlets it's absolutely fine; when we wanted to "party" we headed to Soldeau or the main town. The value is great, the ski areas are huge, the schools are good since it has targetted less experienced skiiers and lots of the slopes are relatively easy which means you'll get to explore the mountain within a few days even as a complete beginner instead of being confined to one nursery area. I'd also diagree with Pia Bang; from what I've heard from two seperate friends, I'd avoid Bulgaria unless budget is your absolute priority; while the prices are amazing, both found the food & accomodation poor, the slopes to be very limited, the rental equipment shoddy and the general level of service to be unhelpful bordering on rude.
As for web sites, one of the best, in my opinion is the Ski Club of Great Britain one.