Tbh, keeping such things on a PC is not only stupid, but dangerous too.
Imho, I would never keep any of my passwords stored anywhere but write them down straight away. Keep a specific book (one is fine but you can keep 2 if you fear any kind of damage to the first one). Write the website name, username, email and password (and any extra details that are important to you like your security Q&A) and do the same in the second book. You can use a carbon paper and keep 2nd book's blank page under 1st book's page and then write if you don't want to do double up your workload. Keep both the books safe (but not in same place). Saving your passwords on browsers is also not a good practice if you want to save yourself from getting hacked.