I am a 74 year-old beginner on guitar. Heard about this software from JustinGuitar.com.

I would like to make charts or diagrams of the scales and chords I want to practice so they appear on my desktop computer screen and also to maybe print them out so I can use them when not on the computer.

Which version should I buy? Standard or Pro? And what are ND1 and ND2? Are there actual levels within the different versions?

Thanks for any help with this.