How to use the Turbo expert help functions and find out the background data table

Thank you for this expert event for 2024!

 

I was always stuck at some pages while using the TurboTax web version. 

Usually how could I get advice/help from the expert team?

 

How could I use my purchased TurboTax software to file the tax for last year?

I can not find an entrance for that function.

 

Many thanks.