I've recently been reading articles (primarily wikipedia) about different plants, their sizes, and all elements required in the identification of certain stars, constellations etc. I'd like to learn more but simply visiting pages on Wikipedia endlessly for hours won't accumulate much aside from a bunch of facts about random stars. Where does one get started? Are there any good beginners resources on physics in relation to astronomy? I want to know more but I don't know where to start. Would be great if somebody could nudge me in the right direction, thanks!