OK, I know this may sound completely stupid, but... I found that in the Battlepedia it says (EXAMPLE) BURROW LEVEL 10. Well... Im level 10, but I dont have it. How am I supposed to get it? help? thanks! :P

You need to use Bottled Faeries on your pet to get the abilities. In your example, Burrow is a level 10 Earth ability. Assuming that you have never blessed your pet with a Bottled Earth Faerie, you will have to use enough Bottled Earth Faeries to get all of the Earth powers below level 10 first. And don't use a Bottled Faerie unless your pet is high enough in level to get a power you want or it will be wasted.