I was rather surprised to read an article today claiming that most people are unaware that they can search for keywords in documents and websites, as simply as pressing CTRL+F, entering the search term and clicking or pressing enter.
I suspect that there are plenty of other things that some of us take for granted, and others never hear about.
One thing I have learned to do recently is to turn to Google Books first, even in looking up things in books I own, and even looking things up in books I have written myself. While I may end up pulling the volume off the shelf, being able to search for a word or phrase electronically allows me to find what I am looking for much more quickly than skimming pages and using my eyes and/or memory. And in some cases, doing this with a book that you have yet to read will give you enough of a preview to know that the trip to the library or Inter-Library Loan request is worthwhile, or that it would be a waste of time.