World of Warcraft Miniatures Game?

My stepsons bought their father the deluxe edition core set and a booster set for christmas. In the deluxe set he got monsters and horde and then he got alliance in the booster set. There isn't any alliance ubases or dice in the deluxe set. Can we buy them separate? Also, is there an online site where you can see a game being played? Some of the directions are confusing and hard to follow.