I'm not prepared to sign up and have zero actual computer skills. But, I do feel bad for taking advantage of the good nature of those churning these things out every game. Is there a like a how-to on these?
Not really. As long as you can type you can do a GDT. What I would do is click on "post new thread" and mess around a bit, just don't post it when testing things out. When done, just exit out of that page.
Click on post new thread: Then set the prefix by left clicking on it for a drop down box, scroll to select GDT and then fill out the header. You see enough of those to get the drift from there. on the header, GDT number, who they are playing, date time place.
Next is just filling out the info in the main field, if you glide your cursor over the icons at the top will tell you what they are.
Alignment: I start here and click centered in the main field, Then start typing out what you want. add links and graphics.
Just mess around a bit and see how far you get. Ask us questions where you get stuck.
Don't feel bad, and I was horrible at this in the beginning, too. I still screw stuff up.