transport option

This is my first trip in Japan. I have plan my trip as follow. please advice what kind of transport pass i should buy in order for me to travel all itinerary starting from airport in Kansai

27/3/15 --- arrive Kansai airport (how to go to Kyoto centre from airport)
27 & 28/3/15 --- In kyoto (what pass i can use to travel around sightseeing)
29/3/15--- From Kyoto to Nara (how to go to Nara)-- overnight in Nara
30/3/15--- From Nara to Tokyo (how to go to tokyo)
30-2/415--- Travel around tokyo (what pass i can use to travel around tokyo?)
2/4/15--- Tokyo to Narita airport (how to go to airport?)

I am confused with what kind of transport pass i should buy during my visit. Please advice. How much is the 7 days pass for 2 passengers? Do you advice me to buy unlimited 7 days pass?

Thanks

Joyce