Pack Smart
The smart you pack the lesser you sag! Nothing new to say here except 'Travel Light'. Yet, in your enthusiasm to have a weightless bag, do not throw out the essentials.
* Cottons or synthetic blends are most practical for Indian summers. Don't get synthetics that don't 'breathe' - they'll make you what else but breathless!
* The sun will usually be glaring at you most of the day. So a wide brimmed hat and sun glasses are a must. Winters can be chilly. Come armed with sweaters and light jackets. A collapsible umbrella will help you stay dry during the sometimes-sudden, sometimes-continuous rain during the monsoons.
Language
For most parts of India, you won't really need to mug up any local lingo. You possibly cannot - there are 18 recognized languages and over 1600 minor languages and dialects! But there is good news. Elementary English is commonly understood in cities and towns as it's taught in most schools and colleges. English is also what the Government and corporate world writes and talks in. By the way, did you know that the English language has accepted a lot of Hindi words - veranda, pajamas', jungle, loot....there are lots.