Start tally in Demo Mode

//Start tally in Demo Mode

There’s no Demo version in Tally.

Start tally in demo mode is same as Starting in educational mode is Demo.Work in Educational Mode is definitely an option obtainable in the Startup screen to the near future people of Tally.ERP 9. The near future people can install and have live knowledge on the reports and functions available in Tally.ERP 9, while Tally.NET User and Tally.NET Auditor can login from the remote area, watch reports or scrutinise information while Tally.ERP 9 works in Educational style.
In the Startup screen
start tally in demo mode
Press Alt+W or select Work in Educational Mode
The Job in Educational Mode has two choices
Gold Edition Mode: On Single User version in Educational Mode selecting this method Tally.ERP 9 can function. You’ll be the last day of the month and able input information on the first.
Gold Edition Mode: On selecting this method Tally.ERP 9 can perform in Multi User version in Educational style. You’ll be the last day of the month and able input information on the first.

What is the difference between a demo version and paid license version?

The only difference between a demo version and paid license version is, you can not put all dates in tally.
what does that mean? It means, suppose, in the April month consists of 30 days. When you type a date, normally you type 2/4/2013 or 02-04-13 or what ever style. Tally will accept only 1or2or 30 / any month/ any year.
That means Tally will not accept any date in between. Once you activate with a valid license no tally will not show the first activate screen and it will accept any date.