I cannot remember my AGI from last year and I am having trouble printing my return to send by mail. Any recommendations? What type of printer do I need to use?

You need your 2019 AGI to efile 2020. The AGI is on 2019 1040 line 8b. If you filed a Joint return you use the same AGI for each spouse.

How to find the AGI.
https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/01/25947

If you didn't file 2019 or filed it later in the year then try entering 0 for the AGI. If that doesn't work you will have to print and mail your return.

Or request a transcript from the IRS
https://www.irs.gov/individuals/get-transcript

You can print on any printer.  Print it single sided.  You can go to an office store like Fed Ex or Kinkos, Staples etc to print it out.

 

How to mail a return from the Online version
https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online/01/26258

 

Be sure to attach copies of your W2s and any 1099s that have withholding on them. You have to mail federal and state in separate envelopes because they go to different places. Get a tracking number from the post office when you mail them for proof of filing.

There are three ways you can use to locate your AGI:

 

If you have your last year's tax return, read here: Find your AGI

 

If you used TurboTax online to file, you can access your account here Login and download a copy of your prior year’s 1040 tax return to find your AGI.  Click here for instructions: Prior year's return

 

If you do not have a copy of the tax forms, you may order a transcript from the IRS.  Click here Get  Transcript and select  "Get Transcript Online "  or request a full copy of your past year's tax return.  Click here: https://www.irs.gov/forms-pubs/about-form-4506

 

@ kimwaldron2016