kind of ticket, HK?

Hi there...I'll be traveling to hk for a week and i plan to go around places. What kind of ticket would you recommend that i get and how much would it cost? I also don't have any hotel transfers so i plan to take the airport express and go shuttle to marco polo gateway. Hope you can help me with this. thanks. Also what terminal should i go down to if i am taking cebu pacific airline. thanks again=)