What questions do I just go to Wikipedia for versus asking the questions here please provide exacting guidelines?
The sort of questions we discourage are those which have answers that are readily available from easily accessible sources such as Wikipedia. Once you have checked and found no satisfactory answers, by all means ask it here. Where possible, state what research you have already done and why you have found the answers to be inadequate so that you don't run the risk of someone providing you with the same unsatisfactory answers from the same sources that you've already looked at.
"It's on the Wikipedia!" can't be a reason to exclude a question from being asked here a priori.
Just because something is on the Wikipedia doesn't mean it's on the English Wikipedia (see how much you find about the Kauzenburg there, for example ...). Even where it is, the other language Wikipedia pages - very likely in languages you can't read - often have better writeups as far as local history goes.
Finally, even where the English Wikipedia has an extensive write-up, others can and do have equally extensive ones, but concentrating on other aspects. For an example, compare the English and the Portuguese articles on the Falklands War. A good answer wouldn't just quote one or the other - it would synthesise an answer from both.