Reddit reviews Korean Martial Arts Handbook

Please, please, do not try to teach yourself martial arts. Much of martial arts are about training a movement over and over again so that it becomes muscle memory. There are lot of subtle things going on in even simple techniques that you will miss by trying to teach yourself from watching a video, or reading text/looking at pictures. If you start to teach yourself to do the wrong thing, you'll only have to spend more time unlearning it when you start getting proper instruction.

If you're interested in things like history, and such then by all means plow forward. There are two books I can recommend: A Killing Art, and also Korean Martial Arts Handbook which contains a wealth of information on Korean arts in general, and a whole lot on the history and creation of Tae Kwon Do.