Digital BW, The Print

I have just moved out of the wet darkroom and am setting myself up 
digitally -- I have a new epson 2200.  I have been reading posts 
here for a week or two and I need a bit of assistance in 
understanding profiles, curves, and RIPs. I am not sure I understand 
the difference and whether I need to do just one of these 
calabrations or more than one.
I am told that I can downlaod profiles  -- curves too?
Right now, as a start, I am using the original ink set at BO with 
EEM paper.  That is the Photo Black cartridge.  The printer also has 
a Light black - does that one function in concert with the PK when I 
set at BO?
Also, I have not run a color print through the printer at this 
point -- is it wise to not do that (the curiosity is killing me)and 
just leave this a virgin B&W printer.  My work is B&W.
Any assistance is appreciated or links to other sources.  I have 
read the Clayton Jones articles -- they were very helpful.
Thanks.  Jan Palmer