DEMAT-ACCOUNT :Demat stands for dematterlisation of share.Demat gives you the facilitiy to recieve your share directly from your broker a/c, make direct payment of share purchased,recieve direct payment of share sell.all transaction are very fast.as soon as you purchase / sell its value will be debited/credited from your account.
It is very easy to open a demat account.some provider charge annualy but some provide it without any charge.you have to produce proof of your residence/adress as driving licence /bank pass book and within a week your account is ready to operate.
Some Good Online-trade provider list
#.1
1. Icicidirect.com
2. Sharekhan.com
#.2
3. Reliencemoney.com
4. Hdfc.com
5. Indiabull.com