Hafod, I am into my 3rd week of slimming world. It suits me because we can both eat the same meals. It isn't a diet, more of health eating.
If your book is several years old you will find a lot of changes and you definitely need an update.
You probably only did red or green. Well most people now do 'extra easy' where you can eat both red and green in the same meal providing you have a 3rd of your plate as super free food.
All syn values now show red, green and extra easy.
It's a shame you can't get to class because I do think it helps but also understand that it isn't alway possible.
There have been quite a few offers around lately for reduced membership in class and online. Keep your eyes open. I got free membership in Woman magazine. If I see anything I will let you know.
There are also several good Facebook groups for support too.