Dear  biswa,

There is no short method for problems ..u have to practise alot. By doing enuf u will be able to solve the problem asap.

Please feel free to post as many doubts on our discussion forum as you can. If you find any question Difficult to understand - post it here and we will get you the answer and detailed  solution very  quickly.

All the best.

Regards

Amit - IT BHU