Which hotel is the nearest to the Xiling Ski field?

Near the ski field, there are several hotels, here list for your reference.
Longchi Dujia Shanzhuang, located at near the parking lot of the resort. (CNY150-200)
Snowflake Hotel, located inside the resort. (CNY200 around)
Dayi Xuesong Nongzhuang, located inside the resort. (CNY80 around)

In Chadianzi Bus Station, there are dense buses going to the ski mountain. The bus fare is CNY29-33, and the travel time is about 2 hours.

Thank you so much !

Can you please mention how i can book rooms in The Dayi Xuesong Nongzhuang Hotel as i cannot find any online websites?

Sorry, it doesn't have an English website. Maybe you can ask your Chinese friends to help you with the booking if you have any. Or check in directly upon arrival. Generally speaking, there wil be rooms left. Have fun~

Where to buy ticket at Chandanzi station to the snow mountain?

You can buy bus tickets at the ticketing windows inside the Chadianzi Bus Station. Don't worry. :)