Mostly common sense rules for now
Other than that, there are some well known legal points/rules.
1. Legal frequencies are 27Mhz and 2.4Ghz, but each radio has to be WPC approved model, imported under an import license from WPC. If you need any more details on these acronyms, please search the forum BEFORE seeking clarification.
2. Aeromodelling itself is an approved hobby, under the Aero Club of India.
The main things to note, under the common sense category, is to be aware that this is a hobby with safety concerns... so keep away from crowds, populated areas, have someone to watch out for bystanders who get over excited (especially kids), do not fly over bystanders, be careful when you charge batteries and so on.