I can also reach you here... I'd advise against posting emails publicly, because web-crawlers will pick them up and add you to spam lists. In fact, I've removed the email from the post, because apparently that's something I have the power to do.

The first thing you'll need is a Twine editor. As mentioned in the install instructions of my mods, I use the online version of Twinery. With that you can open up a Twine game and see all the passages and code. By reading through the passages you can get an idea of how Twine games, and FTAG, are made - I had zero experience with Twine before modding FTAG, and that remains my only experience on the subject. To save you some time figuring this out: there are multiple programming languages that Twine games can use, with FTAG using SugarCube (a link to the documentation - at least, I think that's the right version).

Feel free to ask more specific questions if there's something you're having trouble with, and I'll see if I can help out (though I might have to relearn how things work, since it's been a while xP)