Ontario Highway Traffic Act

I approached a stop sign at a "T" intersection in a 50km zone with the intention of turning left. It is a rural location, 5:30pm, it was snowing very lightly and I did not consider the roads slippery.
I was actually doing less than 50km because I tend to roll to a stop sign a little bit (I know not good) when I pressed the brake it went straight ...

I was charged with careless driving last night. I am hoping anyone here can give me advice . Right now I am upset, angry, stiff and sore and don't know if I should just go right into my long drawn out account of what happened or just give a basic outline and answer questions anyone may have. I feel I have been charged unfairly (although I am sure ...