Welcome to the forum
@anilp .
Sorry to hear about your diagnosis, but pleased that you have found this forum.
It will seem pretty complicated at the start, but it does get easier. I liken it to learning to drive.
After a while what you have to do becomes automatic, but you need to keep a watch for bumps on the way.
You need a bit of patience at the start as it does take some time to get ratios sorted out and they may want to bring down your higher levels gradually first. Working out the ratios is a case of starting somewhere and then going up a bit or down a bit as necessary. But it is not a science, and we are juggling quite a few different factors alongside the carbs.
When eating out the sensible thing would be to avoid high carb options. In theory I will avoid chips, pasta, curries. However sometimes I just go off piste and guess as best I can. You will be taught how to correct highs, so if things go wrong you can put it right later. Talk to your DSN about this. So being sensible I will go for a salad. On the other hand who wants to pay someone else to put a salad together. So ....
There is a good app for your phone called Carbs and Cals which gives pictures of portions, so you can do a bit of a comparison. I knew nothing at the start but have become reasonably adept at working these out now (after nearly 12 years)
Lots to learn at the start. Plenty of help and support available on here, and you can ask absolutely any questions you have. Nothing is considered silly, and I have learnt most of what I know from others on here.
Keep in touch.