I worried about moving to Win 10 as well, but at the death of my older laptop and the purchase of the new Lenovo, I was forced to accept it. So I took the new laptop to my "repair" guru and asked him to set the opening page/desk top to look as its older versions did because I was familiar with that. He did, and what a help it has been for me.
I have slowly gotten used to what "apps" are and can do (I'm still on a basic, non-smart phone so am techno challenged in that department), and have learned to use them more and more. But having this desktop help saved me the angst and frustration of having to learn it all right away in order to enjoy my email, facebook, boards, and searches.
In my opinion it would be better to make the change now rather than wait even longer before you do, and have even more difference to deal with. Good luck.
Jan in VA