Hi Helen and welcome!
Have you bought the 8 Week Blood Sugar Diet book? Available on kindle and also in book form (which is handy for following recipes which I find hard on my iPhone :))
In summary, on BSD we avoid
Refined Carbohydrates ie
Sugar
Rice
Wheat (so bread etc, anything made of flour i.e. pastry)
Grains which come from wheat
Pasta
Potatoes and other root vegetables
We can eat everything else – which is lots and lots and lots! – but it is good to keep a handle on how many grams of carbohydrates, even the good ones, that you eat.
For example, fruit isn’t actually forbidden, but it does contain many grams of sugar (fructose) so is better avoided except in small quantities. And low fat dairy is very much discouraged because in taking out the fat, producers put in much more sugar.
I got hold of MyFitnessPal app (free) and there are others, and you can look up nutritional content of food on that (calories/carbs/fat/protein) also look up Low Carb vegetables and Low Carb fruit on the web to remind you. Many people here following the BSD try to stick to 50g of carbs per day within their 800 calories, which helps not only with weight reduction but with reducing blood sugar.
I would suggest you read the book if you’ve not done so already so that you are really clear.
Hope that helps! 🙂