Secrets are me-cret, I suppose

So let me let you in on a little secret (not really a secret, more of a piece of advice), universities have a lot of free info and stuff. But you might say hey I don't go to a university. Well, okay that might limit you a little, but the trick is to go to professors' pages. You can usually get a ton of free explanations and guides and history facts from professors' pages, and usually they have little to no checking. Hey, probably professors' like to have random people check out their subject-matter. You don't want to let the professors down, do you?