Different computers usage cause conflict?

I have been using 3 computers. One is my personal lab top. Second is my business laptop and last is my home desktop. I have been using one of them at different times of my life. But it is too hard not to lost in my computers. Some bookmarks of my favorite internet websites are on my personal labtop some are other lab top, some are on home desktop. My word documents are (different copies and same names) are everywhere. I cant organize myself with these different 3 computer. Internet informations (bookmarks etc) , documents (word excel pdf) and folders are very tidy on my different computers. Its too hard to find a solution.