I'm not a Newbie but neither am I anything more than a rank amateur, tho I've been with Affinity since its beginning. My approach was to begin with the introductory tutorials and proceed from there. Same with the workbook. Both can be overwhelming, but I decided to take the time to experiment. I would take an image I don't care about and, for example, apply every filter to see what it will do; e.g. I can't define or explain Gaustian Blur, but I know what it can do. The workbook has its shortcomings, but it contains most of what I need. It takes time and trial.