try investing with imaginary money. the only way to learn about the market is to be in it, even with imaginary investments. what was written about the market in the past is based on the market of the past. its not all bad or outdated, but a some of it is. for example, buy-and-hold only makes sense in a secular bull. in a secular bear, you need to learn a new strategy.
learn by doing. simulate real investing. you will learn a lot.