This books has some of the BEST Indian food recipes I've ever experienced.
I love my local Indian restaurant, but I'd honestly rather have food from this book.
this is a book by priya krishna, she is there on youtube as well, she recreates few dishes from this book so you can have a look at them and see if that interests you.
There are udemy courses on indian cooking which i think you can check out
https://www.udemy.com/topic/indian-cooking/
My suggestion is to see introduction videos of the courses , and see which you get inclined towards, its good and cheap
Here it's on Amazon, but I'm sure it's available at your favorite local bookstore too!
https://www.amazon.com/Indian-ish-Recipes-Antics-Modern-American/dp/1328482472