Very easy, go to their official site and click on "Log in" on the top right corner.
Speaking from personal experience, Weight Watchers didn't really work out for me. I've personally tried around 4-5 programs and this one ( see http://is.gd/bestwwalternative ) was the simplest of them that helped me both lose and maintain my weight. It's maybe because I'm a simple man :D but saying do "this" is better than "do this if this or this is true if not ty this etc." which is what most weight loss programs do.
no, but I also am a Lifetime member to Weight watchers and my husband signed me up for an on-line membership for Christmas and he didn't include that I was a Lifetime member on the information. Is there a way to combine them?