start using jrpass in Kamakura

Hi there,

Yes, but you will have the exchange the JR Pass elsewhere, as the JR Pass can not be activated at Kamakura station. A full list of stations can be found here:

https://www.jrpass.com/blogs/where-to-exchange-the-japan-rail-pass

thanks for the answer
is there in kamakura a jr train, from kamakura to odawara? and from odawara to kyoto?

Yes, all these are on the JR network and can be reached using the JR Pass.

is Shinkansen allways is JR?
i mean, if i see in Hyperdia the name Shinkensen kodama it mean that it is JR?

Hi there,

Yes, all Shinkansen lines are covered.

Just keep in mind that Nozomi/Mizuho Shinkansen TRAINS are not included.