Generate passphrases that are easy to remember but really difficult for the bad guys to guess.
Advanced options
eg. select the dash to generate: dyes-FIRE-beck.
Add symbols and digits to your passwords to increase length.
Alternate between upper and lower case words or randomise case throughout.
The National Cyber Security Centre, an offshoot that grew out of GCHQ, offers more information to better genertate and manage your passwords.