Best place to save and share passwords

[Flyhigher]

Which is the best method to save and share passwords with a sibling? Help!

I don’t have any advice on how to transmit them. Not by email!

Usual advice is to use a password manager. Whether you can share a password manager I don’t know. This would be the first thing to investigate.

I think (though I’m not a professional) that you’re most at risk from a) phishing attacks - where it won’t matter how good the password is b) number crunching machines going through all possible variants. So better to go for a longer password, even if it is made up of more easily remembered components. But avoid full words - maybe cut two letters off the end.

You could use a technique where part of the password uses a rule that you both know but don’t write down. Eg you both have the same edition of a book, and you tell her the password is purplarmadil329, but she knows the 329 is to be replaced by the first word on page 329 of your shared book.

but please note, I am not a professional.

We have a system that we both know. Unique for each site so there's no need to change every password if there's ever a slip.

Depends on the nature of the sibling. Do they manage this sort of thing well for themselves, or do they find it hard to follow technical instructions and guidelines? How many websites, accounts etc ? What are they for?
How often will new accounts come along?

Solutions could range from "print it out and post", through texting them, to using something like Keepass where basically all the usernames, passwords etc are kept in one file, encrypted, and so you can safely email or otherwise share that file because only you and sibling have the master password to enable the Keepass app to open and read or change it.

Then there is the added matter that ideally, important accounts should be protected using multi factor authentication (like when you log into your bank, and you don't just need your username and password, you have to stick your card into a doodad and put in a pin to get an extra number out of it to log in, or nowadays do something similar with your mobile).

Password manager. Look at Dashlane or Lastpass. They will do the job. There are free versions with limited functions. It's worth paying for the fuller version though if you can.