You need strong and unique passwords to keep hackers out of your online accounts. Click here to learn my secrets for creating safe and strong passwords.
For the best security, however, every account needs a different password as well. That way, if hackers figure out one password they won't automatically get access to all your other accounts.
Unfortunately, remembering every password for every account is hard to do. That's why you want a password manager program.
KeePass is a good option. It stores and organizes your passwords so you don't have to remember them.