What do I include in the physical mail I send to revenue Quebec? All 30 pages or just the first?

You can use the Print and Mail function in TurboTax and you would send all of the pages. 

You can refer to this article. https://ttlc.intuit.com/turbotax-support/en-us/help-article/printers-printing/print-mail-return-turbotax-online/L5bwuqXGy_US_en_US#:~:text=Select%20File%20in%20the%20menu,mail%20on%20the%20next%20screen.

Hello,

In order to Paper file your return you have to go to Netfile Filing Hub and choose option to Print and Mail my return. Your return will be printed with barcode that you can send to Revenue Quebec. If you need more product specific help let us know which product you are using and we can provide more help.