All the help docs deserve the credits:
First post I encountered Detail installation instructions
Working on the site visit report reminds me about the MikTex tools I had a year ago. And, I am learning it through this process. First of all, there are urls that help me and I would like to acknowledge their effort.
HowToTex is very helpful, but I could not install/use the packages. This one looks pretty professional. Math course at Kansas State University is primarily for creating magic math formula. I started with this dummy skeleton, at least is a working example for dummy. A self-study manual. Another LaTex online book here.