I finished it the day it came out, it’s a great intro and overview to Sass and SCSS, I am looking forward to the FCC Version when it is ready. Would it take really 5 hours?
It just depends! I like to take them slow and workout each challenge in numerous ways so I am able to grasp everything. Then I sometimes go back and re work them. A 5 hour course would probably take me about 7 to 8 hours. Schedule some time, relax and you will do good!
I have found these two tutorials very useful for learning sass:
and http://www.sassmeister.com/ for writing and compiling sass to css on browser.