My system was not working properly. I tried to solve the problem but nothing worked. So, I decided to re-install the operating system and removed windows-8 and old version of Ubuntu from my Laptop and re-installed Ubuntu 14.04. After the installation of operating system, I installed the following:-
1. Lamp Server – Apache, MySQL, PHP
3. Necessary Plugins
Also, read about octave, IRC (Internet Relay Chat) and did some work given by Bhagwant Sir. He gave me the monthly reports of total amount generated including service tax, edu. tax etc. My work was to make an annual report of every year from April 2004 to March 2015. Then to extract the entries having amount more than Rs. 50,000/-. The work was quite easy.