I put this here because I figure most people use Windows and as such more users will be making passwords in Windows as well.

This is a pretty thorough article of everything you need to know about passwords. It describes in depth the security of passwords and what makes them secure and why. It tells you how to protect yourself against all sorts of attacks and gives you great ideas on how to make easy to remember, absolutely secure passwords.

This is a must look for anyone using a computer no matter what operating system you use.

http://www.baekdal.com/tips/password-security-usability