They still have those books, in libraries & thrift stores too.

A web search can usually find anything you need to know about computer use..
Tutorials online, you tube videos.. find one that works for you.. some are more tech based and some for beginners..
It all depends on what you are wanting to know or what issues you are having..

If looking for info for your computer or device - try their website for support & user guides..

Or ask your question here & we will try to find some info links for you...