I am new to this forum stuff so can someone please advise me... Once I have asked my question and received my answers, should I delete it all somehow, to avoid blocking up these pages? If so, how do I do that?

Many thanks.

Welcome

Quick answer - no. Q & A's are often searched from historical topics. In fact you can't actually delete posts once submitted.

Thanks for the info.

You are doing just fine!

just as a footnote to the above, you can edit your posts (and even manually delete individual posts), although the original posts are held in archive for the moderators to see. Legal reasons etc..

You can also 'lock' a thread so that no further post can be made to it (for exams a thread selling a car is probably no longer worth discussion and could be locked by the original poster).