Blender Secrets - Kit Ops add-on

Kit ops is a free add-on for Blender that lets you model hard complicated surface objects in the shortest possible amount of time. Here is a quick start guide.

Kit Ops add-on: https://gumroad.com/l/kitops
Free inserts: https://gumroad.com/l/hopsclassicinserts

Are you looking for short, efficient Blender tutorials?

Well, good news. Blender Secrets is home to hundreds of one-minute or less video tutorials that teach you specific topics. And whether you are a beginner or a seasoned pro, you’ll definitely learn something new. And not just every now and then - every day! Prefer to read something instead?
The 883-page book should keep you busy for a while. Or just download the free 30-page e-book right now!