I just finished reading the book UX for Lean Startups by Laura Klein. It had a lot of good information, mostly about how to do user research and testing out hypothesis before designing using either qualitative or quantitativ methods. I didn’t know much about this way of working before I read this book.
The book also teached about how to design, what to think about before designing, different sketches, wireframes and prototypes. But mostly it was about the user research and testing out ideas part and didn’t say much about UI or graphic/visual design.