Upcoming trip and Need help with directions

I will be going to a trip in Japan soon and the plan is to go from Tokyo to Hakone to Kyoto to Osaka and back to Tokyo in the end. I was wondering if someone can help with the directions specifically how to get from Odawara station to Hakone and back as from what I have seen it is only possible to use the JR pass to get from Tokyo/shinagawa station to Odawara station and we have to figure out a way to get to Hakone from Odawara station.

TLDR: How to get from Odawara station to Hakone using JR pass if possible, also is it worth it purchasing the JR pass to go from Tokyo to Hakone to Kyoto to Osaka and back to Tokyo.