If you want to get into Indian without getting a ton of spices, pick up the book 5 Spices, 50 Dishes: Simple Indian Recipes.
In reality there are lots of Indian recipes that are not complex, and don't use tons of ingredients outside of the core spices. A lot of day to day Indian cooking is done this way. This book goes into detail about 5 core spices (chili powder, cumin, coraidner, mustard seed, and turmeric) and uses them to create awesome dishes that are easy and delicious!