This is going to be a huge work in progress because lucid dreaming is a major passion of mine, therefore I have a lot to say on it, and a lot of experience. I've spent the past 4 or 5 years talking about, researching, teaching, and experiencing the phenomena. I have a how-to guide that has helped many people, I moderate a popular Discord on the topic, and have amassed a ton of amazing links to other guides, conversations, forum posts, etc. Behind the scenes I'm going to be editing this page into several pages to include all of these things. Check back!
Meanwhile, here's a rough copy of my guide.