Project Orion has been a very informative series of videos that I can come back to as a reliable refresher every now and then. It covers almost everything regarding the Spigot API, which has given me many more ways to solve problems I previously thought near impossible. The content is presented in a professional yet lighthearted format, which makes it more enjoyable to watch. Each video is informative – there is no filler, you can learn and apply your knowledge after each video. Overall, I’m thoroughly satisfied with my purchase.