I tried to find the answer to my super-noob questions without success, so please forgive me if these questions have already been asked to death...
I got my new K-x yesterday and I'm working my way through the manual to figure out what all these nifty buttons and dials do. I am long-time back pocket p&s user, so I am starting from dead zero on the dslr knowledge curve.

I'm sure I'll have lots of better questions later as I learn more, but my first exceedingly elementary questions are:
1. Why is the shutter setting labeled "Tv"? Is it just because "sensitivity" already used the Sv, or does the T relate to shutter somehow that I don't catch yet?
2. Why is the e-dial called an e-dial? I was trying to make it something about exposure, but it does so many things. Instead of giving it another random letter, I wish they would have called it the thumb wheel or something so I didn't have to remember so many letters... AE, AF, AV, EV, TV.... ugh!

It will be easier for me to learn what the dials do when I know what the abbreviations mean, rather than just trying to memorize random letters, which is kind of what I'm doing now. ... I'm sure you long time dslr users are laughing at me by now, but, truly, I had to start taking notes as I read the manual to keep track of all these new abbreviations!
I have a few other silly simpleton questions, but I haven't finished reading the manual yet, so I may be able to find those answers without completely embarrassing myself! I hope I look back on this thread in 6 months when these things are second nature to me so I can have a good chuckle at myself.