plan of vacation

These summer holidays, I will be going to India for a month. Before I go, I really need to get some information on (sounds better) the place . like what things i must be careful of，what i cannot do or must do, what should i bring， how is the english popularity rate there ......
If i wanna take back gifts for my chinese friends，what stuff is cheaper than in china and worth taking?
thanks for answering and reviseing！

As for answering your questions, it depends on where in India youre travelling to as the kind of precautions, things to do and gifts you can carry back depend on it

What things should you be careful of?

1. India is a large country just like China with each region  having its own problems and challenges for a tourist.... In Delhi, for example, make sure you travel in a group at night .. preferably in a car ... people try to take tourists for a ride... so make sure you are aware of where you want to go, have clear instructions and preferably know generally how much it should cost ..

having said that, India is country with warm people and you will have a fantastic time .. and these issues do exist everywhere

2. Worth taking - Immerse yourself in the culture of the place.... take back things which are truly Indian .. for example take back a beautiful saree for your friends or handicrafts - thar again depend on where youre going to