The videos below are a selection of bonus content that doesn't fit neatly into the other sections of the site but could be very helpful to you.
Jing is a free tool that will help you make annotations and share screen grabs and desktop recordings.
You can even upload shots and videos to a server so your hard drive doesn't get cluttered. I use it all the time for all sorts of tasks.
This webcam (under £50) is SO much better than the inbuilt one on my mac and well worth investing in if you are doing Skype lessons. However... there is one issue - addressed in this video.