After coming back to India, I found these sites useful. I used them so suggesting you.
www.etechies.in : I used this site for my laptop repair and it was good and reliable. They have informed me through SMS and called me also and did good on time service.
http://justbooksclc.com/ : using this as a substitute for the books library we got used to when we stayed in Denmark. This modern, private library allows us to select books over net and they deliver and pickup those books from our home. My kid is enjoying all the good books.
Traffic in India has become more tough and trying to do as much as possible through online shopping etc is far more better to save time, energy and money.
We are using Videocon d2h for TV and are satisfied with that.
I found www.olx.in useful to sell and buy the used items. Its really becoming popular .