I am a little confused about LaTeX in general, but let me se if I can get this right:
From what I can understand, it is a way that a user is able to enter mathematical expressions by certain keystrokes, and have them display with some consistency under most platforms.
Now, it appears to be waay more powerful than this, and I have heard that people can "program" LaTeX? What does that mean exactly?
I'm just looking for an introduction, or a link to one if necessary.
If you have aspirations to becoming a mathematician or physicist, learn LaTeX! The best way is to simply turn in all your homework in LaTeX format. This advice is particularly useful for an undergraduate who wants an advanced degree with a thesis, but I think it couldn't hurt to learn LaTeX in high school.