HomemadeTurbo - DIY Turbo Forum - learning how to make basemaps w/crome--questions

alright I have been messing around with crome and dont fully understand how to use it. I have a p06 but the boost tools only works with a p30 map loaded i know this is just how it is. I am running a d15b7 and dont understand what I need to do to because wont the fuel values be different? My other questions are about the individual fuel multipliers. I've already put in 450 for fuel injectors. what is and what values should be in..
1.main fuel
2. 02 correction
3. startup
4.throttle tip in

right now they are all at .533, I dont even know what these are.

under this is some gear correction ----, what the hell is that?

in a window on the bottom is says >Boosted>0.53 Final Multiplier - what is this and is it right?

Next I click on options

under idle what is IAC duty cycle and where should it be at?

I do not have v-tec so its disabled but what is IAB?

Under sensors, I do not know what most of them are or what they do, could anybody tell me about..

knock sensor-this one I know I do not have but I would still like to learn
ELD-what is it and should it be disabled?
atmospheric pressure sensor- is disabled
injector test circut- is disabled but I have no idea what it is
disable oxygen sensor (open loop)- it is not selected and I have no clue as to what it is
disable oxygen sensor heater- again I dont know if it should be disabled or not
enable debug mode(disable 02 and more)-is not selected-wtf does it mean?

if anyone would be willing to put in some of the info they know it would be much appreciated, i'm sure there are many others besides me that would like to know this info too so plese give us newb's a hand, thanx.

EDIT: this is the free version of crome