"Neck Diagrams is a very special app. I can't tell you how much work you are saving me every single day!"
Here's a short screencast by Justin Dolezy that introduces you to SOME of the features of Neck Diagrams. It's a great way to get started, so why not watch it whilst you're waiting for the download to finish!
NOTE: the version shown in the screencast is not the current version (ie its an older pre-release version!): please take a look at the Features/Screenshots page which shows the current version. The screencast will be updated soon to reflect the current version.