These are the macronutrients you get trough eating. There is no evidence that a certain amount of fats or carbs is healthy. When eating normally, you will have enough of each macronutrient. When you live in a Western country, you will also get enough protein to support your daily losses. However, if you are interested in what these macronutrients do in your body, read articles from The Nutrition Source on each macronutrient:
The Nutrition Source is a web site maintained by the Department of Nutrition at the Harvard School of Public Health and provides information based on sound scientific evidence.
Regularly people ask me questions questions about what the most healthy foods are. The answer to that question is: all actual foods, with few ingredients, that can grow or live somewhere. Journalist Michael Pollan summarizes this question with "Eat food, not too much, mostly plants" and I agree. However, I won't let you wonder to other industry-tied web sites to find a more detailed answer, and get a little bit more in depth right here.
What are the healthiest oils? That depends on what you consider to be "healthy". Some oils low in saturated fat are also low in omega-3 fatty acids. I've ranked the fatty acid composition in the following figure based on 1) omega-3 fatty acid content and 2) total polyunsaturated fat (mostly omega-6) content. Based on price and availability you can now make your own choice of oil.
I wanted to write a book, instead I made a website. www.liesbethsmit.com