[kondro]

There is more material out there than you could possibly read, even if you quadrupled your reading speed.

Your first challenge (and the one that will allow you consume and absorb more knowledge) is choosing which books to read in the first place.

When it comes to non-fiction, a lot of it either repeats the same information available in other books in the same genre or is crap.

I'd recommend choosing material starting as close to whatever the first principles are of your chosen subject and working up from there. Starting with first principles allows you to understand something enough to help you determine where you need to go next, with the added advantage of giving you the basics so you can synthesise more knowledge from there yourself.

Starting the other way round is fine if you really need to attack a certain area quickly, but it's no substitute for starting with foundational knowledge.