I don’t watch my dad use the computer anymore as I feel the same as the one in the comic.

That time I saw him log in to his yahoo email (tldr; my dad uses google to go to yahoo)

1. Open Chrome (which I set google.com as the homepage)
2. Type in yahoo.com to the search bar
3. Click yahoo.com from the results
4. Click on the Mail button thing somewhere in that page

Or that one time I asked him to login to to gmail account while he was browsing his yahoo email. (tldr; my dad does not believe in tabs)

1. Close his Chrome browser with the yahoo email.
2. Open Chrome again
3. Type in gmail in the google search bar
4. Click mail.google.com from the results.

I miss my Z8. It was 1 week short of 2year mark when it died last week. I would advise to you to turn on your auto backup just in case.

And if you use the tachiyomi app, back that up as well.