I highly recommend you learn to use Keepass to store all your passwords/keys. It is free, open sourced and not very hard to use. You just need to remember one password. https://keepass.info/ I have been using it for years and it is very very helpful. You just need to keep the KBX file anywhwhere you feel safe (google drive, dropbox etc). Even if someone has access to your KBX file, they won't be able to access it without your "master" password. I would recommend using 4-5 random words put together as your master password eg. "horsechaircountrysallymama"..much harder to guessed/attacked. Hope this helps :) Need any help with it, just ask ya. Best of luck!