Bus ticket booking for Fuji area

I would like to find out how could I make online reservation for the following:

a. Bus ticket from Kawaguchiko to Mt.Fuji 5th station

b. Bus ticket from Kawaguchiko to Fuji Shibazakura Festival area including entrance ticket

c. Fujisan Fujigoko Passport

Is there any online reservation webpage in English for these?

I think the three ticket that you said can not be reserved on the Internet.

The direct bus from Shinjuku to go to the 5th Station, can be reserved on the Internet.
http://transportation.fujikyu.co.jp/english/gettinghere/12.html

If you purchase the Fujisan Fujigoko Passport, there is no need to buy tickets in the section of a. c contains a.
I was not able to find information in English about the Fujisan Fujigoko Passport.
http://bus.fujikyu.co.jp/otoku/fujigoko.html (Japanese)

For b. You will buy it at number 7 bus stop Kawaguchiko Station. I guess that it will be down in a line of passengers waiting for a purchase. The price is 1,900 yen.

For c. You can be purchased at the sales offices of Fujikyu bus. They are located Kawaguchiko Station, Fujisan Station, Lake Yamanaka, Gotemba Station, Mishima Station, Numazu Station, Shinfuji Station, and Fujinomiya station.
I think it is possible to also purchase a travel company such as JTB and KNT, but because it's Exchange Order perhaps, that there is a need to go to the sales office of Fujikyu bus in travel day.

For Fujisan Fujigoko Passport, I will let you know that there was a mention on this website.
http://www.japan-guide.com/e/e6905.html?aFROM=5200_6900