When you first log in to the system or if you choose to reset your password, you'll need to set a secure password.
Please follow all of these tips - not just one.
Create a password at least 8 characters long - longer passwords are more secure.
Don't reuse a password from another system, this makes it easier to crack.
Use non-obvious symbols and numbers e.g. don't use sequences like 123 etc.
Use inside jokes, uppercasing, uncommon words to make passwords hard to guess.