I have distroyed two boards now!

I seem to have scuppered the system yet again apparently by exceeding the character number allowed on any one comment!
Yet nowhere have I found any warning that only a certain amount of characters are allowed in any one comment??
There are warnings about using plain text only - but it does not say you will break the system if you go over a certain length! – or I can not find this information?

Maybe it is not expected that any user would want to post as many words as me - but I am a profuse writer and anyway could not think of a way of explaining my questions with more brevity.
However one of my points was that I would not need to ask the question I had or any of the many other questions I have if I knew where there was a reference/manual/FAQ about Plone for users of Plone?
If I had one to read I would not need to ask such long questions or perhaps any questions at all.
I am a qualified web designer/technician but I am getting frustrated at having to stumble around a system I don’t know like a blind rabbit and having to learn by stumbling into something hurting myself and then noting where it is and what it does ;-)
This is not how I like to learn at all so although my Vark learning styles test said I was a multi learner and more on the visual side I guess it got it wrong - because I defiantly here want to read the instructions first!!!!

take care
veriteeXX