I was recently diagnosed type 2 myself, and the carb thing has been a steep learning curve. At first I assumed it meant cutting out bread, rice, potatoes and pasta - and of course biscuits and cakes. And since sugar is a carb too, no sugary drinks or sweets. I don't count sugar separately from other carbs, but it is useful to be aware if something is sweet, it is likely to be high in carbs. But as I have been discovering, there are carbs in other foods too. For example, my high fibre no added sugar muesli with a sliced banana had more carbs than 3 slices of toast.
I don't have the book recommended, but you can google pretty much the carb value of anything on your phone. I use scales too to get an idea of portion size.
I have changed how I eat a lot, and how much. This is because one of my first symptoms was blurry vision and that really scared me. It isn't easy. Especially as I share my meals with a growing teenage son, and a husband whose calorie needs are more than twice mine due to his work and exercise levels. But some things I have done are to use a smaller plate for myself, and to either not have the rice/ potato/ pasta part of a meal or restrict myself to only a desert spoonful.
My GP gave me a blood glucose testing kit as well, and I am using that 2 hours after meals to see the effects of what I eat and different foods.