Which card is more suitable for 7-day trip?

Dear Sirs,

It´s my first time in Japan. I will arrive on Feb-27 at Narita Airport, and depart on March-07 from Haneda Airport.

I will basically stay most of the time in Tokyo sightseeing, but I would like to go to a skiing area near Tokyo city.

My questions are:
1) Which ticket or pass I should buy to walk around Tokyo city plus the train to the nearest skiing area?
2) What kind of transportations (train, buses, taxis, etc), this pass can be used?
3) Besides this pass, what kind of pass should I purchase? (Ex.: Suica card? Pasmo card? JR East?, Other?)

Thank you so much and looking for your explanation.

Best Regards,
Felicia