I have written pretty extensively about things like that on my site, in more than one section of it. Say in the basic educational e-mini section or in the A Word of Advice section that features many articles on trading e-mini futures aimed at the beginner.
I have recently written one more and posted it just today.
Its title "The very basics of e-mini trading for the very beginners" leaves no doubt that it is meant for the newbies to trading e-mini futures, specifically for those interested in day trading these financial vehicles as most people are.
If you are totally new to day trading eminis, this article is a good place to start.