Yes, as my gf is NZ-born but of (gujarati) indian parents she has a head full of recipies but with no quantities – she just knows how much is right. I'm not bad at making chapattis from scratch these days – we make bhajis (usually spinach-based) and samosas which are great too, just too faffy in small quantities.
Lots have quite similar bases so get that right and you're set. There's no one "indian" style of cooking though, the different areas in India can have completely different methods and blends of spices.
Just steer clear of the sauces, for the cost of a couple of jars of sauce you could equip yourself with the spices to make dozens of them very cheaply.
Top tip for indian (and not-indian) cooking: at the frozen section in the supermarket, look in the Asian bit – where you can usually find frozen garlic and ginger in nice easy-to-use cubes. Much more convenient than chopping a currys-worth every time, and makes it far easier to make a curry with leftovers rather than having to buy in ingredients.