If you quickly want to know if you are using a secure password use this site to check how long it would take to hack your password.
https://howsecureismypassword.net/
Just to give some examples how fast passwords can be hacked given the right circumstances i put a small example list below.
greenpeter = 2 minutes
lissa1988 = 42 minutes
ilovekate = 2 minutes
Peter23 = 1 minute
P@ssW@rd! = 7 days
rednissanbus = 4 days
If your password looks like any of the above i would recommend you change it as soon as possible.
So What is a good password?
What i usually recommend is a password of 5 words or more with spaces in between. The spaces are vital. The more words the better!
Example of a strong password: moon microwave police safe beer fruit = 1 DECILLION YEARS
If the server you are using your passwords on is storing them in plain text you are screwed whatever password you use, but at least you did your best. If you want to know more about the subject of password cracking i would recommend this very informative video:
Be carefull out there,
Mark