India is a popular destination for many gap year TEFL trainees and it has a very long and colourful history. It's one of the most popular destinations for Western backpackers and more recently Goa and its beaches has started to attract serious numbers of long haul tourists seeking the sun.
However, there is little integrated EFL industry. As a result, most teaching advertised on the internet for India is voluntary in nature. English is the second language so while demand to learn and improve is high, paid teaching opportunities are few and far between, and there is no integrated EFL industry. School students learn English as part of their curriculum and there are a few private institutions as a result.
However, there is a big market for Indians wishing to train as online English teachers and this might also be an avenue you consider to cover any gaps in paid employment.
Tips for teaching English in India:
Both of these will be be useful courses for you if you wish to teach English in India.