Chongqing travel

My intention to visit some of the famous buddhist temple and prefer to self travel by ourselves.
I need more information in transportation to those places.
1. How to travel from the downtown to Dazu craving rock? I read some information from internet is to go to the Longtousi Bus station and travel 2 hours to Dazu town and take a bus or taxi to Baodingshan.
Q. How to go to the bus station and can buy the bus ticket on the spot.? Does the temple sell any vegetarian for lunch? If yes ,What time is the lunch? Can i get a taxi or bus back to the Dazu town and buy the bus ticket on the spot and back to the Longtousi bus station?
2. How to travel to huayuan temple? By metro or bus or taxi.?
3. Is there a dafo temple in chongqing? Please advise how to travel to and fro to downtown.

Lastly, where can i book the train ticket which i need to travel from chongqing to chengdu?beside the train station.

Thanks.