How do you reset your ipod touches 4 password?

if you can remember your passWord, type it in, and go to settings. Go into general, then passcode lock, then, if you want to get rid of your passWord and wish to have passcode lock of, then press the "Turn Passcode Off" button.

You will have to type in your current passWord though.

if you wish to change your passcode, then simply press the "Change PassWord" button, and type your desired passcode!

that's it!