Printing an Envelope in Google Docs

My dad called me for "technical" help today. He wanted to know how to make an envelope in Windows 10. I think he mentioned upgrading to Windows 10 when I saw him last week, but I haven't been able to tell if my parents have Office installed on their computer. Anyway, my dad has a Gmail account, so I thought, what better way to teach him, than to create the documents he needed with Google Docs. I created and shared a Google Docs with him and my sisters. I was pretty psyched to hear that he was able to access and edit it! Today he needed an envelope. Here are the steps I emailed him:

Start Google Drive

drive.google.com

Click New, Docs

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Go to Add-Ons, Get Add-Ons

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Search for envelopes

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Click the Free button to install

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Click Allow in the pop up window

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Go to Add-ons, Envelopes, then choose envelope size

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Click in the envelope area to edit

BTW- I have no idea what's going on with the "attempting to load image" thing going on near this last image. I can't delete it. Maybe I'll try going into the html.