Welcome to 3fc!
I feel you on the goal setting and breaking. I actually just started to lose some weight I gained back. I recommend weight watchers, if you're looking for some guidance on food. I tried it in the past, and now, and I've always had success when I (mostly)stuck to the plan. Also if food is hard, changing what you drink or even just increasing your exercise can be a good start. I started off using exercise dvds and then progressed to going to the gym. As for the forums, I found the best way is to just explore to see what you can find that interests you. There are areas for different weight goals, diets, ages, and many more. Good luck on your journey! You will definitely find oodles of support here!