How can I start trading and investing in stock market?

There are two ways of doing it.

First, open a Demat and Trading Account with your Bank.

1. A demat (dematerialized) account in your bank is required for deposit and withdrawal of shares which you will be buying and selling.
2. A Trading Account is required for buying and selling of shares in the market.
3. After opening of Demat and Trading Account with your bank, you can start trading in shares through your Bank.
4. Different Banks like SBI, HDFC etc. provide services for trading like trading through phone or trading online through the internet and you have to choose as per your choice.
5. If you are well versed with the Internet, you can trade online; otherwise you can just trade through the telephone. That is, telling your bank which share you would like to purchase (including quantity) and which share you would like to sell.

Another way of trading in share is to open a Demat and Trading Account with some Broker Firm or Company like Religare Securities and Indiabull etc.

These broker firms also provide all kind of facilities for trading and in my personal opinion, trading through broker firms is more suitable.