A strong password should be at least 12-16 characters long. Longer passwords are exponentially harder to crack. For maximum security, consider using 20+ characters or a passphrase with 4-6 words.

A secure password combines length, complexity, and unpredictability. It should use a mix of uppercase, lowercase, numbers, and symbols. Avoid personal info, dictionary words, and common patterns like 123456 or qwerty.

A passphrase is a sequence of random words, like "correct-horse-battery-staple". Passphrases are often more secure than short complex passwords because they are longer and harder to brute-force, while being easier to remember.

Yes, a password manager is highly recommended. It securely stores unique, complex passwords for each account so you only need to remember one master password. This eliminates the risky practice of reusing passwords.

Modern security guidance suggests changing passwords only when there is a reason to, such as a data breach. Using strong, unique passwords for each account is more important than changing them on a schedule.