Forgive me if this is a dupe.
It happens frequently that new users post questions without using MathJax (either using Unicode, ASCII, an image, etc.).
Sometimes, I see experienced users comment with a link to the MathJax tutorial, but other times they directly edit the post and add MathJax themselves.
Is one of these methods preferred? Is it better to try to guide new users towards learning MathJax (or TeX more generally) themselves, or simply to make their posts more legible for them?