I think everone needs to get this information. I would say it's "easy" to keep yourself safe on the net. The reality is that for most people it's difficult and it is certainly not easy if you don't have the information. Episodes 3, 4, 5, 7, and 9 are a must.
Please use the lower quality mp3 (2 - 3 Mb) if you are on the corporate network in order to conserve bandwidth.