I often see vaguely framed questions posted, and I would like to help their askers, but I cannot, because their questions are missing key information.
Instead of having a long discussion in the comments, I would like to point them to some resource or checklist, which will help them form a good question.
Given that our Help sectionCenter uses this Q&A as the canonical Questionquestion for this topic, What concise advice would you give on how to ask a good Questionquestion?
Do keep in mind that this advice should be specific to GIS SE i.e. we do not want to simply link to the multipage How To Ask Questions The Smart Way by Eric Raymond, or 'What have you tried?'