Tally ERP.9 Questions

• Why Tally is the best for accounting 
• How to install Tally ERP.9
• Why we will Learn tally ERP.9
• Who is the Founder of Tally ERP.9
• What is Mean of ERP
• and What is Mean of .9

Hi Friends this simple but most important Question so give me the answer without using Google 

if you're using Google...

So please don't give the answer it's are my Request.