First, start buying a ton of stocks, hire some financial advisers to help me make smart investments. This will give me a steady flow of money, so I won't just be limited to my lottery winnings.
Second, my family owns a beach house which will be used as an investment property, so I will pay off all the mortgage and debts, and pay for a few additions/renovations.
Third, I would buy new cars for my mother and I. Probably a Porsche for my mom and a Tesla Roadster for myself.
I'd donate money to research for cancer, retinal implants, and to find solutions to environmental problems, among other things.
I would donate to several charities, including Heifer International, Save the Children, etc., and also many religious organizations.
I would start up an account for my future children's college, as well as paying for my own.
OH! And I would buy a TON of musical paraphernalia, guitars, amps, pedals, string instruments, brass, etc. I would probably try to acquire a massive collection of vintage guitars. Probably buy myself a little recording studio as well, hire a few session musicians and record an album just for fun.