I did WW Core program. They have two programs, Flex and Core. Flex you could points for everything you eat. Core you don't count points for Core foods, and you get 35 points a week for non-Core foods. Both programs you can earn activity points.
The Core program teaches you healthy eating. My personal opinion is it's easier to maintain the weight loss if you learn healthy eating from foods from the grocery store. There's are very helpful WW forums on the WW websites. The forums are free to visit and discuss things. It costs to use the on-line tools or go to meetings, of course.
I lost 35 lbs. on the Core program in six months. I went to meetings and still go to meetings. I have a wonderful leader. I also learned and shared a lot on the different WW free on-line forums and still visit the forums. The on-line tools aren't very helpful for the Core program but the people doing Flex like the on-line tools more. In 1-1/2 years I've gained only 5 lbs. and am working on taking it back off. I quit exercising but am getting back to it. I just ordered some exercise DVDs from Amazon.