Mate, Webflow is definitely not complex and the videos in the university are the best thing you can find out there to learn. The didactic is perfect ( even funny at some points) and it definitely introduces you to all aspects of Webflow. After that, you only need to practice and you’ll be set for life.
I would like to second @Jeandcc and add one more suggestion - best way is to start on a project that you want to do, and do it - in the process of figuring it our you will learn!