I have been using Fritzing since the 0.9.3b release and up until today I had never clicked on any of the links in the help menu. It turns out there are at least two very useful links in that menu. The first one is “Parts Editor Help” which explains a lot if not all of the features like internal connections, moving connection points, clicking on background elements and many more. The second one is the “Tips, Tricks and Shortcuts” which has many good tips like copper blocker, constraining paths and many more.
I wish I had read these a long time ago. I have figured out most of the stuff on my own the hard way but reading this may have saved me a lot of time.