How do I get started filing the 1120?

[cathypool1]

I paid for the program, but it does not allow me to download

[VolvoGirl]

What computer do you have?  To install the Business program you need Windows.  Window System Requirements
https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...

How to get started with the Desktop program, install and activate it
https://ttlc.intuit.com/turbotax-support/en-us/help-article/product-delivery/download-software-turbo...