sugar alcohol

I saw a sugar free, no calorie soft drink, but although the calories are listed as zero, there is a given carb count of 3g per 100ml. I assume this is something to do with sugar alcohols being counted as carbs, but those carbs not being absorbed into the body as per usual. Still, I would like to...

I'm new to carb counting! I use to look at fat and sugar content. My life has changed! When I count carbs, do I count net or all carbs? In other words, if I am looking to stay around the 50 carb mark, is it carbs minus fiber, and minus half sugar alcohol (if there is any), or am I looking for...