The playing patterns which are taught in all the DecPlay courses apply equally, whether you are using PianoTabz (numbers) or traditional notation in the form of what's called a lead sheet.  Here is an example of how 'Hallelujah' would look in the PianoTabz format, and in standard lead sheet format:

The Piano Bundle shows you how to play using both formats, and applies not only to beginners, but also to advanced level. It includes PianoTabz song libraries, and shows you how to access standard lead sheets on the internet.  

We've found that most students who already read notation prefer to use the numbers method.  However, if you prefer to play using standard lead sheets, the Piano Bundle shows you how to do this.