bank 1 ?

I'm getting diagnostic trouble code saying o2 sensor heater bank 1 sensor 1. Would this be left side pre-convertor ? For the life of me I can not find out which is bank 1 or 2 and sensor 1 or 2. Would appreciate any help for this auto dummy.:confused:

http://www.asashop.org/autoinc/june2002/techtips.htm

//2000CAYukon

Thanks 2000CAYUKON that explains my question and I picked up an O2sensor socket at Carlisle this weekend. Thanks again.