Here is a much simpler way to create easy to remember (not only somewhat easily remembered) and secure passwords: Use a complete sentence as your password! If it has more than four words, it is secure enough, and if you make it a bit obscure, nobody can guess it. So instead of
Dictionary words are always a bad idea, even though you are correct that length does always make a password stronger.
And BTW, forget about these special characters and such.
Don't.
There's a huge difference between having to brute force through 65^n and 95^n. Though you don't really need that many. The passwords that I need to type often look like
bab+ef+qeo+feo+F9!. It's still pretty fast to type. Most of my passwords are KeePass generated, though...