I have a couple questions about motorcycles i’d love to get answers to that involve the DMV and insurance.A little background info, i plan to purchase a 08,09 or 10 kawasaki ninja 250r, in CA

1)what costs go into buying this off a person? like tags, license plate, title transfer etc, and what are the average costs in CA.
2) if i buy it from a dealer and the bike is 3500, how much will it be after taxes, and all those extra charges?
3) Are there any other charges/fees im missing?
4) what do you pay for insurance on a motorcycle? and waht do you think will be cheapest for a 18 year old male, ca?