You've been put on a basal/bolus regime. As a T1, your pancreas has stopped or is stopping its production of insulin, so you need to inject a replacement. (T2s have the opposite problem, they generally produce a lot of insulin, but can't process carbohydrate properly so end up with high blood sugar as a result.)
The novorapid is your
bolus and is meant to process the carbohydrate in the food you eat. Eventually you'll get a ratio of how much insulin you need for each g of carb you eat (eg 1 unit for 10g of carbs, but different people have wildly different ratios.) You can also use it to correct your blood sugar if it's too high, and you'll end up with another ratio eg 1 unit of insulin brings your blood sugar down by 3 mmol/L. (Insulin ratios vary widely from person to person, and even by time of day or physical activity, so there's no use comparing your dose to other diabetics that you may know.) This, in theory, allows you to eat what you like and when you like, though certain foods can be difficult to dose for (eg pizza
). Some T1 diabetics choose to eat a low carbohydrate diet because they find it easier to control their blood sugar like that, but that is your choice. Diabetes is one of the few illnesses where the patient has a lot more control than the physician - they can advise but you'll learn how your individual metabolism reacts to food, insulin and exercise.
Your bedtime insulin is your
basal dose, it's meant to carry you through when you're not eating (eg at night). Typically it lasts 24 hours and your team will try to adjust it so that your bedtime blood sugar is the same as your morning one. Theoretically, if you ate nothing at all, the basal would last all day and night to keep your blood sugar level, with no need for the bolus.
Though the basal/bolus regime is very common, particularly for new diabetics, in the long term you have other options (eg an insulin pump) which can give you more flexibility, particularly if your insulin needs vary widely across the day. There are also continuous glucose monitors which attach to your skin and allow you to give your fingers a rest, but again this is probably for the future.
And there's a thing called a honeymoon period, where the pancreas of a new T1 can go on producing (variable) amounts of insulin for a long time, thus making it more difficult to adjust insulin dosages....
Has the hospital definitely confirmed you are T1? (There are a couple of blood tests they should do to confirm this, as there is a small chance that you are a T2 diabetic, who might be able to control the illness by eating a very low carb diet. Pretty unlikely, as your symptoms sound like classic T1, but not impossible. )
Finally, (and my apologies for the wall of text), there's a lot to learn as a new T1 but you don't have to learn it all at once. Yes, it will affect your life style but there are very few activities which it rules out (astronaut is one of them but there are airline pilots with T1). Good luck.