I would also add that it makes it so much easier if you do a meal planner before you shop. We usually do one for and weeks worth of teas and write down all the ingredients we need for these then add anything on such as:
Food for lunches, Salad, new pots, jackets, etc
low fat cheese,
fat free yogurts / cottage cheese
snacks such as low syn crisp (french fries, Quavers),
alpen bars,
eggs,
Sweetner,
Fruit,
tins such as tuna, sardines, beans, toms.
Some of these have probably already been mentioned but this is what I have on my list all the time so didn't want to miss anything just in case
It stops us just buying a load of food and then not knowing what to do with it and its saved us money / throwing things away as we only buy what we need for that week and all the fresh stuff gets used up.
Also check what you want to use for your HEXB, nothing worse than buying a big box of cereal thinking you can have it then realising you have to syn it!!
Good luck with SW and you op.