Since I am novice to MMA, what can I do to help mathematica.stackexchange.com in this beta version?
I mean is it better to ask pre-intermediate or intermediate level question, or not to ask a question at all.
Or is there any other way we can help?
In my opinion, it's better to ask real questions that you have about mathematica, not worrying about the level of expertise.
If your question isn't answered by typing it into a search engine or in the Mathematica help, it's probably intermediate enough to be asked here.