It's been a while since I listened to the course. I found Ed's delivery style a bit annoying. He keeps doing things like quoting a bad example about how to do things, and then saying, "But YOU'RE not like that...ARE you?" in such a condescending way.
Apart from that it's not such a bad course. It doesn't focus completely on concentration, but kind of gets side tracked into inventing things and all sorts. If you are thinking of getting it, then I would look for one that's going used. I remember seeing lots of them somewhere a while ago - was it on Amazon? I wouldn't pay full price for it. From what I can remember Ed's advice comes down to -learn to meditate if you want to concentrate.
I found some excellent learning/memory products a while back on a site called www.worldlanguagelearning.com in the "featured products". "Ultra Learn" has a lot of really good advice about concentration in it, stuff I have never heard before.
What is it you want to concentrate on? Is it just as a mental/spiritual exercise, or do you have a task that you want to complete? There are plenty of paraliminals that can help with tasks - "Get Around to it" and "Automatic Pilot", just off the top of my head, are great ones for that!
