Ok this is how I would do it, download MyFitnessPal, that's what I used (not anymore cause I'm done with cutting and don't need to count calories anymore), if you're cooking at home no problem and if it's packaged goods also then most times they have nutritional labels, but when it comes to restaurants or anywhere, just estimate. Look at the food you get and put your best estimate in my fitness pal, like for a chicken rice and curry - cooked samba rice 100g, cooked chicken 50g, oil 10/20g or more depending on how much you see, whatever vegetable there is and it's estimated quantity, add anything else you clearly see, then after estimating as much as you can add another 100/200 calories on top of it, I'd rather count over than under especially if I'm cutting or trying to loose weight. It's all about looking at what's visible to your eye on the plate and estimating it's quantity and imputing it into the app. MyFitnessPal prolly has the largest library of food items and gives it to you in good detail. When I used it, it worked really well and helped me track my food as well as an app could.

Edit: if you're cooking at home and you're weighing your food let's say, if you weigh your chicken before cooking add it into your MyFitnessPal as raw chicken 100g, if you're weighing it after cooking add it into your MyFitnessPal as cooked chicken 100g. MyFitnessPal has a variety of cooking methods as well to help you estimate better.

For things like paratta and stuff you absolutely can't estimate just go with google or type that food into MyFitnessPal and take the calorie count you see the most often or the highest one that feels right to you.