Disneyland calafornia-- price of a day pass? how to get there?

I am planning on going to L.A. in early june for 10 days and I would like to know how much it would cost for a day ticket for the Disneyland park? I am 18 so I guess that would be an adults ticket, if anyone knows how much this would cost I would appreciate the help, I need to factor it in to my travel budget. Also, if I'm going to stay in central L.A. (nearby the airport), what is the best and cheapest way to get to Disney? Pleeease help! thanks