I would like to learn testing tools. However, I have no idea about the details, or which is the best way to learn the course. Also, what are the different types of testing tools available and which one is the best to learn in order to get a decent placement.

Hi Geeta,

The need to learn testing tools is kinda tied up as to what aspect of Testing you want to make your career in.

Incase you want to go in for Automated testing, we have tools like -
1) QTP and WinRunner from Mercury
2) Robot and Ratinal Functional Tester
3) SilkTest and TestPartner.
4) Segue, QARun etc.

These are focussed on functional Automation testing.

But incase you would be interested in Performance testing, tools like -
1) Mercury LoadRunner
2) VSTS from Microsoft
3) Rational Performance tester.

I suppose there are a few testing institutes that train you on these tools. What I would suggest is you download free trial versions of the same and play around using the help files.. You would learn more in that way.

You could also learn defect Management tools like Quality Center.
Let me know if this helps....
Cheers.....