Problem with Calibre

I reside in two different countries and as such have two different computers. I keep my documents synchronized using Goodsync. This works fine with all my other files (pictures music etc) but when I've synced the calibre library the books although there ca not be seen in Calibre is then any way of making them to be seen or do they all have to added again.
I have a very large book collection as Kindle saves me carrying cases of paper backs.

Thanks