Hey,
I just finished the second section. I improved my battle axe model quite a bit (see previous post).
I used the methods from the first two sections. Except one litte thing: to make the blade top and bottom more symmetrical I had a look at the Mirror modifier. It works like the Array modifier, but instead it mirrios the object. This was quite handy.
I really like this course. I feel like I make some real progress 
EDIT: I finished the third section of the course. You can find the results here.