If you like looking at code for examples of how to do things:
When I help people out with particular topics I often make a github gist. Normally I modify the IPlugEffect.h and IPlugEffect.cpp files from the Examples/IPlugEffect. You can copy the code from there into IPlugEffect on your machine, overwriting the existing files to try the example. Here is a list of all my github gists.
People have also started tagging their iPlug2 projects on github with the “iplug2” tag, so you can view them all here.