Background: I've been using what I would call LaTex for ~4 yrs to typeset assignments, reports, essays and tutorial notes. I have been using "TexShop" (for Macs) - mostly because it was simple when I was first starting.
Situation: I was recently prompted to search out the possibility of using Tex/Latex/[Appropriate name here] to typeset Arabic, but have found that I am completely unable to understand any of the jargon or technical language, and so can't make any use of the documentation found here and elsewhere on the web. While I'm not exactly brimming with excitement at the prospect of reading hundreds of pages of technical details about the typesetting program I use, I really would like to be able to start to get a more sophisticated grasp of the topic.
Question(s): 1) where can I find an accessible, well-structured and accurate introduction to Tex/LaTex/ConTex etc. that would serve as a solid foundation for learning about more advanced features (e.g. typesetting in Arabic; adding La/Tex capabilities to a program, forum or website; generating technical images w/ Texs of all sorts; etc.)?
Clarification: I am very familiar with typesetting in LaTex (I've typed 100s of pages of math, with all the fixings), but I couldn't tell you what the difference between Tex and LaTex is or what ConTex is or any of the "Tex" story and how it fits together. So, as far as I can tell, the linked thread on "what intro book for LaTex would you recommend" (sry for imprecise quote, I can't view the title while writing this), for example, doesn't really address the question. This is meant as clarification, not criticism - thanks to all who have responded so far.
While it is a subjective question, I'd also be interested to know from those who answer the above:
2) if they would actually recommend heading down this road.
3) I also wondered if there was a community similar to this one that had assembled instructional videos or even problem sets on the topic?
Ps. I tried to add useful tags to this, but was not allowed; perhaps someone else with correct permissions could do so? e.g. "readings" "intro" "basics" "beginner" etc.