First I will show you the easiest way in Photoshop to create even, concentric circles and after we will ad an inverted text to make it look hypnotic in a groovy kind of a way.
If have been using Photoshop for a while now, you must had also notice the Mask Tool. But do you know what exactly it does and how and when should you decide to you use it?
In Photoshop CS6, the new version of Photoshop, you can use special cropping tool and you are done, but that doesn't mean you cannot achieve the same result with older versions.