If you have only recently joined Slimming World, I am presuming you are following the Extra Easy plan.
Firstly, as someone who has also done weight watchers in the past, you need to try to forget about points and weighing etc of foods. The slimming world plan is designed so you dont have to worry about these kind of things. Easier said than done I know, to try and forget them, when you may be so used to it.
Firstly in reply to your downfall of bread and crisps (and lets face it, everyone starts a diet with a certain downfall or we wouldnt be here in the first place) which you mentioned. No food is a no no on Slimming World. However, how much of those types of foods you can have has to be restricted, otherwise you will unfortunately never lose weight.
The first and main part of SW is the FREE FOODS list. Use your free foods unlimited to build meals. The Free foods list is huge, so there are so many possibilities of recipes etc, it is impossible to be lost with things to make. One thing SW advise however, is to make a 1/3 of your meal superfree food (superfree foods are most fruits and unstarchy vegetables). This is a clever way of controlling portions without the need for weighing or counting calories/points etc. Look at a standard plate for instance, if you filled a 1/3 of it with superfree vegetables, you only have 2/3 of your plate left for your free carbs and proteins and therefore your carb and protein portions are automatically controlled. Of course if you are making things like stews, casseroles, bolognese etc, superfree food can be added into the recipe. If that makes sense.
Just to note, you can eat as much as you like of the free foods to make yourself satisfied. Of course there is a limit too, just like with any healthy eating plan. That means try not to eat foods just because they are free. i.e eating when you are not really hungry.
SNACKS: First choice for snacks where possible should always be superfree foods. Of course there will be times when you feel you need something more substantial and this is fine too, use either free foods or you can use some of your syns for a snack.
HEALTHY EXTRAS: On extra easy you have 1 choice from the A list and 1 choice from the B list daily.
SYNS: 5-15 syns are allowed daily. These can be used on things which are not free such as sauces, snacks etc.
WATER/FLUID: Very important to make sure you get plenty of water into you new eating plan. SW has lots of high fibre foods, so if you don't drink enough you may find you become bloated and constipated.
Hope that helps you a bit more.
I would also advise perhaps starting a food diary under the food diary section on here. That way members can look at your food diary for you daily and help you if you are still struggling in areas.
Good luck!! Slimming World is a great plan.