All Market Participants are broadly divided in two categories - Investors & Traders. The main difference between an Investor & a Trader is the duration for which the person holds the asset. Investor tend to have longer time horizon whereas Traders tend to hold assets for a shorter period of time to capitalise short-term trends.
Visit the following Financial Sites for more informaion about Investments:-
http://www.facebook.com/invest4gain
http://www.nseindia.com
http://beta.bseindia.com
http://www.mcxindia.com
http://www.ncdex.com
http://www.sebi.gov.in/sebiweb
http://www.cdslindia.com
http://www.amfiindia.com
http://www.camsonline.com/default0.html
https://www.karvymfs.com/karvy
http://www.moneycontrol.com/stocksmarketsindia