Metabolism

I have been doing research into how I can increase my metabolism for weight loss. One is by energy intake, ie food and drink, the other is by exercise. The key is to get the right balance of the two, so i lose weight while my metabolism increases.
Last night I read about the zig zag effect. its where you have a few low calorie days followed by a couple of high calorie days. The theory is that a few days of low calorie intake burns body fat, and before the metabolism can adjust to this new low intake a high calorie day or two increases the metabolic rate, ensuring fat is burned even faster. whether or not this works I don't know yet, i haven't done enough research, but it would make sense as to how I am not hitting 20 plus stones. I know My diet has been bad in the past, and I look at very fat people wondering, on the basis of how much i eat, how much they must put away! Maybe the difference is that most weeks i would start of with great intentions and this would fizzle out. Maybe i was on a zig zag diet without knowing it!!
To get my metabolism going I need to keep exercising, that I know. And one routine that stands out is kettlebells. I think the key with them is they give you a cardiovascular workout while building muscle. Building muscle is going to be key, as this will also increase the metabolism. I want to burn fat, and only fat.
i also need to understand my diet better. when i started this I hoped to keep my diet healthy, without having to make too many changes. This approach was wrong, I need a complete overhaul. The hearty meals is great, but I need to split that into 5 or 6 small healthy meals to get my metabolism going. I am researching how best to do this.
The final thing I am looking at is improving my sensory acuity when it comes to my body. I am going to chart this, and measuring will help, but if i can improve how I understand my own body, and what works and doesn't work for me, then i will have a better chance of succeeding.