The other things you see along the way, when searching for answers in a book, are always fun. You can’t help but stop and peak in on other tid-bits as you look for your answer. The mind is hungry to learn and devour words from a page. There’s no stopping the hungry beast.
And why would you want to?
Soak it up.
Take in information from some other place than a computer screen. That’s not to say, that you should ignore the web of electronic knowledge that is available to you, but it is to say that you should supplement it by other means. Take in knowledge from all places. Oh the things you’ll learn from the scent of must and cigar lingering on the pages of some book high up on your shelf. As if the scent, itself, has something to teach you.