Worried about Joomla

I haven't yet begun on assignment 2, but so far it's a pretty big mystery to me.  I've also heard the tutorial is really long--comparable to a feature-length movie!!  Let's hope it will all be pretty straightforward.  This class has been leading me down some highly unfamiliar territory so far, but as long as I can go at a pace I feel comfortable with (and as long as there's a chance I might actually learn something and retain it), things should be okay.  Luckily I read very quickly!