Filing

I came across problems with my taxes and I had to call. I filed an extension and it slipped my mind. Oct 15 was deadline. How do I retrieve my taxes and if I can’t file electronically then how do I print and send them? I usually have over 200 pages. Do I print every single page?? And I send the fed to IRS and state to my state tax office but I need the correct addresses as well. Help!