Just to be clear about "manuals," there are 2 types: the owner's manual, which should have come with the vehicle, and service manuals. You probably don't need service manuals right now, but you really should get an owner's manual post haste. It has tons of useful info. If all else fails, call the MB number (1--800-FOR-MERC).
Welcome to the list! I've learned a lot from it.