Indeed!! And if anyone here says something that doesnt sound right to you, feel free to question it! Its all about the science, and if we (well, I that is, can only speak for myself on this) say something that really doesnt make sense, ask for it to be referenced, no offense will be taken. That should also help you weed out the bad info from the good info. After all, we are all imperfect humans here, and we all make mistakes 
You are right about net carbs. You dont need to count fiber. There is an issue though depending on country of origin. Some countries will show all the carbs, and then subtract the fiber from total carbs. Other countries dont do that, and will have even the fiber included in total carbs leaving tou to do the math. IMHO, if tou dont know, assume the worst. And if its that important to know, do a little research on the product to find out 
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Ketonian Tip: watch out for hidden sugars. Maltodextrose/Maltodexterine is higher in sugar than plain white table sugar. Ok, thats not entirely true, but it does effect you blood glucose much much faster than table sugar. In this case its all about the glycemic index. Table sugar has an Index of about 55. Maltodextrose has an Index of 115 (ish). I discovered this because I was using a product labled “safe for diabetics”. It was definitely not My BG level was going bonkers, wacky highs showing up seeming randomly. I began keeping track of nearly every thing I did from the food I ate, to the times I ate, macros, total calories, where I bought the foods, even labeling. Thats when I noticed a trend right after certain times a day. Right after taking my metamucil. I began doing a little reaearch. It looks to me like we dont even need fiber in our diet, at all. Plenty of doctors confirming this as well. Trust me on this one thing, research this for yourself. The things that you learn during such searches are invaluable. 
Glad to hear you already know about intermittent fasting. I do this 100% of the time now (just over a year). Getting fat adapted makes fasting so easy. Just be strong and don’t snack/eat outside your feeding window. Remeber its all about keeping insulin as low as possible for as long as possible.
Oh, since I’m on a roll here… 
Don’t fret about some of the arguments you see about “why” something works. We have had several big discussions here about different things. It boils down to this… if its working, fine. Dont change it. Also, when you see such a discussion, be careful not to let preconceived notions lead you down the path into believing one side over the other. We get our share of trolls here. We try not to feed them. They tend to muddy the waters a bit, then they eventually get banned. You will see some of us argue a point, and both sides rigidly hold their ground. To which I’ll often do is look at their references, and decide for myself. There are even times whith certain individuals, when they get going, it can be fun to watch. I always look at the science, and both sidies will often have good points. Thats the thing about science, its never settled. When someone tells you the science is settled, they are sellung something .
And above all else, keep calm and keto on!
Keto Vitae!
