Gettin an 8 month husky! i dont know anything!?

My friend is bringin me an 8 month old black & white husky she found for free.. She thinks its siberian. He has all his shots and is neudered. I'm so clueless on how to take care of him. No websites are specific. Idk how much he needs to eat what food I should buy, or really how big he even is! How old are they when they're fully grown? What food do I buy? What is everything I need!