Read. As much as you can. As deeply and widely and nourishingly and irritatingly as you can. And the good things will make you remember them, so you won't need to take notes.
Investors have to remember: corporate profits are going up, but stocks are going up faster. How can that continue indefinitely? Investors can only earn what companies themselves can earn; the government or the markets themselves don't kick anything in. How can you get anything more out of a farm than what it grows?