Yeah but the problem is remembering them.

A good way to think of a password is to think of a phrase that you can remember with at least 10 words. Then take the first letter of each word and use that as your password. But alternate the case, like have some caps, some lower. And change some of the letters to numbers. Like l's can be changed to 1's.

I've done this and I have a strong password! HACK ME :P (just kidding, please don't!)