Thorin knew that this place was a lot to take in, so he couldn't really judge Aragorn for that. He certainly hoped the best for the others in his life, and considering the Bilbo cared for this man, Thorin now considered Aragorn one of those people. So, watching him struggle with this was hard for Thorin, even if he did understand it.
"I don't much about this new world, but I would be happy to help with what I do know" he replied, nodding his head just a little.