Will you walk with me, Grasshopper?

While I'm working on finishing up my Prep Work for the App Academy, I've started on the RubyMonk Primer: Ascent (the first Intermediate level).  I've found it very helpful as it re-iterates the last lesson in RubyMonk (I had previously commented it went too fast).  Its nice to go a bit deeper into the material.  One lesson in particular I have really appreciated is "Yield."  There is a great set of exercises and a useful summary of concepts.  I will definitely be more confident in my understanding of yield because of this lesson!!