I have read all the way through this thread, and re-read all the way through the other thread mentioned, as I was involved at the time asking similar questions.
For my part I can say three things ....
1. As a result of the previous thread, I bought some "Manley" frames to try them, ... as the name suggests, they have wider shoulders and no waistline, but I actually think they might have been designed by Mr Manley. Whatever shape he was I have no idea. The sides are about 35mm wide all the way down and you put them in the super without any spacers at all.
2. On this occasion I think Frisbee is right, beginners do ask basic questions, and are most helped by this forum by being given simple direct answers, so that they may gain some immediate understanding, and begin their own researches from there.
3. I would think very hard about paying £150 for a course as I have met some very well informed and experienced beekeepers who are willing and indeed happy to help and advise on a fellowship basis, and I have a very high regard for that.
I do understand that some are operating on a commercial basis, and therefore wish to attract profitable customers but that is not quite the same thing. They have their place and I'm sure will have plenty of takers, but it is not the only way, or even the best way, to learn beekeeping from experts of immense knowledge and experience.
In short, and in conclusion, and perhaps with some degree of self-interest ......
Go on Fris ........ give 'em all a good kicking. JC.