This book is an incredibly valuable resource for any aspiring founder. I love the way it's written - concise yet comprehensive, it doesn't leave out any important details.
I've been a subscriber and community member of Micro SaaS HQ since it started, and I think it's the best resource for anyone looking to build profitable products. Upen's ideas are always research backed and well-thought of, and the community is warm and supportive. The deep-dive reports are great too!