It took some doing, but I finally got the fan scene done. Slowly but surely, I think I'm getting the hang of things being more familiar with the interface and common tasks. Here I also rotated the fan blades slightly for a more natural look.
I encountered a small hiccup in creating the two Cage Rings remaining huge despite carrying out the prescribed adjustments. Eventually, I found that the 'Section Radius' had to be changed to a figure of around 0.02 to form the correct shape.
I think this step is missing in the workshop file, around Step 24 Creating the Cage Ring, page 28. So I thought I let you guys know so you don't encounter the same problem. My apologies if I am mistaken and I just missed the step.