Thank you for your response.
What I would like to do is make certain posts full-width, without the side bar. I have an eBook, a work in progress, which I want to show in full-width, because each chapter tends to be long. I set the format as "Single Column" when I published them, but over time, they switched back to 2 columns. I don't know why.
I also have a graphic resource page that only has some diagrams and tables, which I want to be a full-wodth.
I want to make a video gallery page full-with too.
I was hoping that there was a way to change the format from the reading page, if the reader prefers to read it in a full page, but it seems to be a fantasy at this point. For now, I installed a Readability plug in.
Anyway, I am reading Category Template codex, and having some headaches. I will need a major learning sessions for this one.
Whatever you can help me with, I'd appreciate it. Or, you can direct me to a good tutorial site or some thing, but has to be for non-geeks though.
Here is my blog: OlivetJournal.com