What can you afford to lose?
You shouldn’t invest any more money than you can afford to lose.
Understand your attitude to risk
To get bigger rewards you have to take bigger risks. This attitude can make you huge returns but can also lose you all your money. If you fancy a gamble, take this route. However, most people want to minimise their exposure to risks in the stock market. To achieve this don’t put all your eggs in one basket. A variety of investments across a range of different companies in different sectors of the market is more likely to insulate you from the ups and downs in individual shares.
There are many and varied ways of spreading your risk. You could choose to invest in companies in different sectors of the market, such as banking, retail and technology, or you could spread your risk by picking some large companies and a selection of smaller companies.
Bigger can be safer
Large companies, with strong finances and a long history, are far less risky than small, recently formed companies whose strength hasn't really been tested in the market place.
Big, safe companies are known as 'blue chips'. (In gambling, blue chips traditionally have the highest value.) Such companies are very unlikely to go bust. But even these are not completely immune. The demise of Marks & Spencer's share price is testament to that. There's no room for complacency in investment.
The flipside of ‘safety shares’ is that they are unlikely to grow fast, so you could expect a steady, unspectacular return from this kind of stock.
Be in it for the long term
To insulate yourself from falls or even stock market crashes, experts believe you should plan to keep your investments for a minimum of five years. That way, you’re more likely to ride out any downturn. If you think you could need your money before five years, you should steer clear of investing in the stock market at all.
Don’t panic and sell at a loss
The worst thing you can do should you suffer a downturn in one or all your shares, is to sell. This simply crystallises your losses. Keep a cool head and see what happens to the price of the shares over the next few months or even years. If losses occur across all your shares and were linked to a general stock market downturn, chances are that the market as a whole will recover in time. If your losses are connected to a particular share, you need to make a judgement call as to whether the company’s fortunes will change. If you think the situation will remain poor, it may be best to cut and run with whatever funds you have left.
It’s much easier to buy than to sell
Selling is the only way to cement any gains. A ‘paper profit’ is just that – worthless. Many people find it hard to sell their shares, particularly if they have made a profit.
There is no room for sentimentality in investment. It can often pay to accept that you will never sell your shares at the very top of the market. Waiting for the top can expose you to seeing your valuable shares slide in price.

While from within the country you can use http://icicidirect.com, for NRIs; ICICI provides a sub domain based web address http://nri.icicidirect.com for online trading. You must first transfer the money to your ICICI bank account through a transfer of funds from your resident country, assuming that you do not already have money for use of share trading in your account.