Visiting Zurich?

Question

Kindly tell me that how can i take train to thun from Zurich. I am coming tomorrow to Zurich around 8 pm than want to go to Thun. Please tell me how long it takes to reach Thun. What should i do? should i stay in hotel ? Is there any cheap hotels? or tell me how much is the ticket to Thun? Also i don't mins staying 2 days in Zurich. Anyone there who can help me pls. I am male 32 years old. coming from Dubai.