The websites to learn how to sculpt miniatures
creafigs a nice site with sculpting and painting tips.
1listSculpting the good place to learn how to sculpt figures
   
sculptor's websites
Mandragore Miniatures Gael Goumon's website, he's a freelance sculptor working for companies like Reaper, Magnificent Ego, Dark Ages, Fenryll...
FantasticTools Christian Danckworth's site, a German sculptor
Allan C art lAllan Carasco's website, French Golden Demon Winner and sculptor