It does not appear that Jakob's "Fundamental Guidelines for Web Usability" is designed to teach you how to do a user test but shares a lot of what Jakob and his team has learned from years of experience doing user tests. That is very different from what Steve's workshop which is designed to get you doing user testing quickly.
I have attended the Nielsen/Norman Group's Usability Week twice and recently Attended Steve Krug's Rocket Surgery Made Easy one-day workshop followed the next day with Whitney Quesenbery's workshop on story telling.
I think they are both very valuable. It has been a few years since I was able to attend a Usability Week, but I found them very educational and they cover a wide array of inter-related topics from usability research, information architecture, and design. I like the format of going for the whole week or just going to the panels that you are interested in. I find Jakob Nelisen and Bruce Tognazzini to be great speakers and they are able to keep me attention and while Don Norman is a genius I have trouble staying awake during his presentations.
Steve Krug's recent workshop was great for me. It was very hands on with participants actually running other workshop participants through a user test during the workshop. I made big changes to a user test after this workshop that I believe made the test a lot more valuable.
I recommend both of them based on your current needs. Steve will get you started doing testing immediately while Nielsen/Norman Group's usability week can give you a wider breadth of training.