ticket return

i will traveling to china. can i book now for departure date 5th and 6th of october for hangzhou-suzhou-hangzhou? how about payment, i must pay when i pick up it or when i booking it? if i must pay when i booking, can i use credit card? can i collect them on beijing railway station? i stay at hangzhou west lake hostel, no. 62-3, nanshan road west lake distric, west lake scenic, how do i get to hangzhou east station from the hotel. thank you. from julia - indonesia