Be well informed
If you want to know several facts and other useful information for when you want to lose weight, I recommend you to do a rough search online for health information, this way is the easiest there is, you can get some health information like eating habits, exercise routines, portions of different kinds of food and others, now, the most important thing, is to have a very clear idea of the health information you want to get, if the stuff you want to find is considered basics, then yes, a simple online search will do, but if you want to get some other, more insight full health information then you should go talk to a doctor, someone who knows how the body works, and that helps you understand the different groups of food, how these work on the body and the way, these should be consumed.
To obtain a lot of health information can help you behave in a matter that is best for your body, if you have knowledge, you have power, and with knowledge like this, it is possible for you to achieve a healthy style of living, of food consuming and of exercise. Get to know your body, and get to know a bit more by learning some health information facts, it is one of the best things you will ever do for yourself. Remember, health information is easily obtained by talking to your doctor, reading books about health in your local library or by simple searching for the topics you are interested in on the net.