Well, at first I think it's pretty important to understand how blockchain and bitcoin works in general. From the very beginning. Try reading a book by Adam Tapper (I might misspell the name) about it. It's pretty good.
Also, always research as much as you can. There are so many open sources. This forum, reddit, telegram channels
Also online magazines like the coinjournal, cointelegraph
Youtube as well has a lot of info (of course, haha). I am a big fan of cointelegraph youtube channel. These guys really know what they're talking about, post almost every day and majority of their videos are also very funny and creative.