If you want to create good spigot plugins, Project Orion is the course you need. Now with the 2.0, which fixed the flaws of the previous course, you can learn the best techniques of programming, even if you don’t have previous experience with coding. The videos are fully understandable, and because this course contains everything, you don’t need to watch old and confusing Youtube videos. It made me a better coder with cleaner code.