MathJax basic tutorial and quick referencePersonally, I prefer to use
https://www.mathjax.org/It is very much straightforward. Scroll down and click the green button says "
Try a live demo" then you can begin typing your solution out and your typing preview will be shown right below it.
Below is a link that contains all the helpful tips/references which I found is pretty much enough for typing all kinds solutions out perfectly.
https://math.meta.stackexchange.com/questions/5020/mathjax-basic-tutorial-and-quick-referenceYou can use Crtl+F (Windows keyboard) or Command + F (Mac keyboard) to search.
If there are any problems\questions relating to typing your solutions, feel free to send PMs.
