Reddit reviews Rick Stein's India: In Search of the Perfect Curry: Recipes from My Indian Odyssey

Rick Stein's "India" television series and associated cook book may be the way to go.
I cook a lot of curries, but found that the recipes that Rick discovers in the T.V. series really helped me to get out of a rut.

Two recipes from the series/book that I can think of are:

1. First Class Railway Mutton Curry (Whilst the original recipe states "Mutton" - it will work with Lamb too.
   
2. Lamb Rogan Josh
   
   The book: Rick Steins' India - on Amazon
   
   If you can find the T.V. series, or the Youtube clips, it really helps to inspire.
   
   IIRC whilst Mutton refers to a sheep of around 2 years or older, in the india recipes, I believe that Mutton actually means goat.
   
   The series is watchable here
   
   I really recommend it - three months of travel and food discovery packed into 6 episodes. It'll inspire you and you can pick up all sorts of knowledge and advice, whilst being entertained.
   
   Remember, if you don't have a particular ingredient, you can often substitute for something similar - if you don't have dried kashmiri chillies - use another mild/hot chilli pepper. If you don't have red onions, white/brown onions are fine.
   
   I prefer basmati rice, it's so different to American Long Grain rice, but, if you're in a pinch - then long grain will suffice. No lamb? Try goat, beef, etc.
   
   In the series, Rick uses mustard oil for some recipes, but I substitute sunflower oil, or ghee, or coconut oil, depending upon the recipe. I might throw some mustard seeds in for good measure.
   
   No curry leaves? Perhaps try a bay leaf.
   
   Some ingredients are more essential though, you can't really substitute Cumin seed/powder, Turmeric, or coriander seed/powder.
   
   Most of my spices in my cupboard are whole seeds that I either use whole, or grind if powder is required. This seems to give a better flavour and longer shelf-life.
   
   Edit: The recipe for the Rogan Josh is about 20 minutes into episode 1 - no - it's actually Episode 6, I think that the episode naming/numbering is incorrect.
   

Try getting an accessible Curry cookbook like this one:
https://www.amazon.com/gp/aw/d/1849905789/ref=mp_s_a_1_1?ie=UTF8&qid=1510993558&sr=8-1&pi=AC_SX236_SY340_FMwebp_QL65&keywords=rick+stein+curry&dpPl=1&dpID=51xt8LEM4AL&ref=plSrch

Making curries needs the right blend of ingredients. The Rick Stein versions are amazing