How do you shift a 2006 zx6r?

Pull in the left lever on the handlebars, this is your clutch. To shift up, you place the toe of your boot under the shift lever located on the left side of the bike, forward of the footpeg and raise it up until it clicks. To downshift you place your toe on top and push it down until it clicks. After you have finished shifting, release the clutch and apply the gas.

If you really have to ask this question, you have no business on a motorcycle. Look into training programs or a motorcycle school before riding before you kill yourself or worse, someone else.