So, I've already successfully loaded my first tune, but it was pretty basic.  I only adjusted LDRXN to get a little more WOT boost http://nefariousmotorsports.com/forum/index.php?topic=2353.0title=.  I want to get a little more in depth now, but I seem to be missing a few key components.  I've been hesitant to ask because I didn't want to ask questions that were already covered, but I'm having no luck finding information on these things.

1.)  The CF values, does a negative number mean that timing was pulled by that many degrees (ignition was that many degrees closer to TDC)?  If so, I'm confused because my logs after increasing the boost are showing negative CF values under low load but all zero's at high load.

2.)  One of the things I see people talking about a lot are the long term and short term fuel trims.  Is this anything I should be concerned with on a mechanically stock engine, and if so, how do I find out what it is in the first place?

3.)  I've noticed that the xdf file I have for tunerpro for my ECU is missing quite a few of the maps that you guys are referencing.  I've been trying to learn how to make my own definition files but I'm totally lost.

I think all the info about my car and ECU is in the thread I referenced earlier, but let me know if I didn't include anything that's necessary.  If these are too many questions for one thread, let me know and I can break them up.