Searching isn't a great way of actually retaining information. You get a very shallow understanding of the topic.
Reading books cover to cover, at least when they're well written and not full of padding, is time much better spent. And when doing so, I too prefer the ergonomics of printed books.
The idea is that you are gradually building Brain-tree indexes in your grey matter as you read it cover to cover. Whenever you need to look up something again you kinda have a vague idea where to look.