Hi Shobhit, welcome to eTI !

Investing in stock market is not a simple task as it involves a high level of risk. However, to start with, if you are an investor with long term perspective then start buying established companies with good fundamentals on every dip of sensex, in few year of span, you will really have good amount of sum in form of STOCK, however keep always eyes on stock market as sometimes some good companies fails too !

let me give you an example...
Reliance money Online Trading:

They provide a different way of online trading. They have the following packages. This includes the account opening and brokerages. You can recharge them after the validity time is over or the turnover validity is reached.

1) Access fee- Rs. 500
Validity Time of 2 months or Turnover validity of Rs. 1 crore, whichever is earlier
Turnover limit – Non-delivery turnover of Rs. 90 lac, Delivery turnover of Rs. 10 lac

2) Access fee- Rs. 1350
Validity Time of 6 months or Turnover validity of Rs. 3 cr., whichever is earlier
turnover limit- Non-delivery turnover of Rs. 2.7 cr., Delivery turnover of Rs. 30 lac

3) Access fee- Rs. 2500
Validity Time of 12 months or Turnover validity of Rs. 6 cr., whichever is earlier
Turnover limit- Non-delivery turnover of Rs. 5.4 cr., Delivery turnover of Rs. 60 lac

They will charge 1 paisa for every trade therefore no service tax on brokerage.
They charge Rs. 12 charge for each transaction when traded through call center

Pros:

   1. The website is accessed through “Security Token”, therefore it is very secured.
   2. Connectivity of the site is fast.
   3. Investment options like Equity Trading, Derivatives, Forex, Commodity, IPO, Mutual Funds and Insurance are available in one account.

 5 Paisa Online Trading:

   1. Account Opening Charge: They charge Rs.500 for opening demat/trading account
   2. Brokerage: They charge 0.05% of brokerage + 0.20% on Delivery = 0.25% brokerage, and 0.07% on Intra-Day.
   3. Their website is not secure as ICICI direct and Indiabulls.
   4. They provide two types of online trading:
          * Investor Terminal: This is suitable for low volume traders which is a web based terminal and has limited features.
          * Trader Terminal: This is suitable for high volume traders, a s/w tool is provided for trading.
   5. Few of the features of Trader Terminal are as given below
          * Fast execution of trade orders.
          * You can set alerts for your stocks.
          * Live streaming of share quotes.
          * Get information about index, charts, research suggestion on market etc.
          * You can create and customize your portfolios & watch lists.
          * You will get a RM for your account.

but why no one is interested in mutual funds trade i wonder .look at this!
http://economictimes.indiatimes.com/personal-finance/mutual-funds/mf-news/Few-takers-for-online-MF-trading/articleshow/5532790.cms