Software Testing is context-based and risk-driven. It requires a methodical and disciplined approach to finding bugs. A good software tester needs to build credibility and possess the attitude to be explorative, troubleshooting, relentless, creative, diplomatic and persuasive.As against the perception that testing starts only after the completion of coding phase, it actually begins even before the first line of code can be written. In the life cycle of the conventional software product, testing begins at the stage when the specifications are written, i.e. from testing the product specifications or product spec. Finding bugs at this stage can save huge amounts of time and money