I am still learning of course, but it took literally hours, not days, for me to feel comfortable using the program. Highly sophisticated and complex geometry turned out beautiful. I started with Fusion and after watching a bunch of videos online I started designing and I was astonished at what I was able to accomplish. I had a hobby project in mind and some 2D drawings of parts that I wanted to recreate in 3D and print. I am a paralegal with zero experience in CAD design.