Just wanting to know if there are any good informative books on nutrition and portion control?

Internet would be better.

Plus, when it comes to portions, it's a very personalised thing dependant on many variables: energy exependiture,metabolism, gender,age and state of health.

Actually, and this is speaking from experience, if this is to lose weight, forget about portions, measurimg - all that crap - all it does is make you think about food more.

Yeah, nurtition is important, buy if you just try to keep your food as natural as possible - that's the best.
Butter, not margarine
Fresh or frozen veggies,
Less stuff out of packets.

And what you do is ; eat normal one day, next day is a fast day, where ypu only have fluids.

This is really good for the digestive system and metabolism.

I had a weight problem, amd this is what i gravitated to.
Plus i tendrils to snack when i'm hungry, amd i just forget about the having meals thing - but that's my preference.

My mother struggled for 40 years with her weight, and now this is what she does, and shes 69, and in the last year and a half, has lost 50 kg -and kept it off.

the carnivore diet

What ya need a book for... don't eat more calories then you can burn

"Shut Your Mouth" by Kenzie Muffins