I don't have to tell you how unpleasant an experience using passwords is. I shouldn't have to tell you how important proper usage is to your security. I'm not going to lecture.
Below is a PDF file made from the "I Hate Passwords" class that I teach. The button is for my own password system with easy-to-follow instructions. There are also links to some good articles on password managers. (If you care, I use Roboform. LastPass is the favorite in the Computer Club.)
Stop forgetting your passwords and make your life easier! Enjoy.