Before learning or studying something, one should have a goal. If he's into investing into it, then he should read articles about Bitcoin investments. What I am trying to point out is that, if a person is really in a rush then he should have specificity of what he wants to do. There's no need to know about other cryptos and other complex terminologies if he is just into Bitcoin investment. Then if he would be seeking for more, that would be the time to look around this industry. There is indeed no shortcut on learning something but a more efficient way which would still yield you to your goal is acceptable.