Reddit mentions of Moose Set of 5 Blank Skateboard Decks (Assorted Colors)

Lol it's an expensive hobby especially once you start doing things that will break the board. So since you're just starting I'd recommend getting a complete set as they tend to be cheaper. Try the ward skatepark or zumiez. Other than that try Amazon just make sure they are good reviews from the people that actually ride them not just my son loves it. Stay away from places such as Walmart as its a race to what will break first the deck or the trucks. Also https://www.amazon.com/Moose-Blank-Skateboard-Assorted-Colors/dp/B003YKBQUQ are great cheap decks if you want to buy the other components individually as well. You will have to learn to apply the grip tape yourself through.