Slimming World calls their plan 'food optimising' - you never have to go hungry, which is where some people get confused as you expect to be hungry on a 'diet' lol
It's not all about the food you eat though, it's about changing behaviour, getting regular support and getting active in your own life.
Food optimising takes into account individual needs and preferences & no foods are banned and there are lots that are unrestricted (free foods).
Free foods are those which are low energy density which keep you fuller for longer - your 2 (or 4) depending on plan* healthy extras will give you good overall balance of nutrients.
(there's also a 'flexible syn' allowance to allow for days when you have important meals etc & want to go a bit over your syns, but going flexible means you stay in control
- 3 plans (Green) (original) (extra easy) It's extra easy SW are pushing most at the monent, and Aitch, it's fantastic, since I've followed it I've had bigger weight losses.
The green choice promotes complex carbs and protein rich foods ruch as pasta, rice, potatoes, pulses and grains which can be eaten as 'free' food on a green day, which dairy, bread, cereal, lean meat can be Healthy Extra choices.
On an original day you can enjoy fish, leans meats, poultry etc as free foods, using your healthy extras for pasta, potatoes etc...
Plus on each day you have from 5 - 15 'syns' to use on things such as gravy, sauces etc...
Green & Original (also known as red) days you can have 2 HE 'A' choices - dairy products, and 2 HE 'B' products, bread, cereal etc... it's your own choice, you're never told what to eat!!
Extra Easy is really a combination of both - you can eat whatever is free on either day as free on an EE day - your meat, carbs etc are free, though you will only have 1 HEA & 1 HEB - you really can manage with just one as you have carte blanche on free foods!
Aitch - on an EE day, fill 1/3 of your plate with superfree foods, (ones that are free on green & original plans) as much as you like of the free food, and then add your healthy extras.
Just keep the general ruls in mind, if you're full up - stop eating
You should try & get to a class near you for a proper explanation, sometimes it's easier speaking to someone face to face.
Hope this helps!!