I have not tried this program, but my mother lost over 100 pounds on it. I've also done a lot of research in the areas of weight loss, nutrition, fitness, etc. and I have to give Weight Watchers a big gold star...as a fantastic starter program.
It sounds like you are looking for some decent, sound nutritional education. Weight Watchers does a really good job of teaching people about calories, how they work, how many per day one should consume, portion control, PLUS it has the added benefit of a support group AND holding yourself accountable.
People who journal their food intake tend to lose twice as much weight as people who just 'guess' or 'eyeball it'. Weight Watchers is really good at teaching people how to journal food, accurately measure portion sizes (and later be able to quickly eyeball it and know that you're only eating one serving and not five). Having a support system who helps hold you accountable for your goals also tends to help.
I would highly recommend the program. It involves eating REAL food and adopting a nutrition plan that you'll follow for the rest of your life. Avoid any program that only works if you have to drink their shakes, eat their meal replacement bars, or take their expensive vitamins - really, is that a way to live for the rest of your life?