Chapter 4: Not a terribly difficult chapter, although I had some issues with the tools on the last two tutorials.

Chapter 5: Significantly more difficult chapter, the first few tutorials were not hard and could be completed relatively quickly. Tutorial 5 took almost 45 minutes to complete and a number of instructions were difficult to follow. Tutorial 6 was also lengthy and difficult. On a more positive note, I feel like I am gaining a lot more familiarity with this software.

Chapter 6:Chapter 6 was the easiest for me, I had no trouble getting through any of the tutorials and was able to understand the instructions well enough to complete the tutorials in a timely manner.