Funny! I did exactly the same due to the ‘annoying advert’, ****** works !
I have always used SketchUp to draw 3D models, and was struggling to find a really good, affordable render engine to accompany it without having to learn a whole new programme to draw in. After trying, Kerkithya, Lumina, SU Podium, and Vray, I tried Blender, but annoyingly never took it too serious as I thought how could free software be any good? But after trying various things with the Cycles engine I was hooked! And next they will be releasing v2.8 with the EEVIE render engine which in my opinion is head & shoulders above the likes of C4D & 3DS Max.
So I’m doing this course to learn the various techniques of actually modelling in Blender, so that when I import my SketchUp models into it I can either just render them out, add to the model with Blender assets and hopefully in time just use Blender altogether.