A free lunar calendar can be found at Calendar 365. The calendar is divided into months. To see how the moon looks on different months, use the drop down menu on the right. The current phase of the moon can be enlarged by clicking Current Moon Phase.
As an alternative, a location sensitive lunar calendar can be found at Time and Date. The website detects the user's location automatically and offers a lunar calendar based on where the user is.
Paul Carlisle offers simplified, .svg images of the phases of the moon. Images ini .svg format can be scaled up with no loss in quality.