The Tube Tracks packages I and II are not meant as educational packages, but simply a set of backing tracks. They have come about because of many requests from YouTube viewers/guitar players, wanting to get the kind of backing tracks used in the Matt Otten YouTube videos. There are 10 tracks in mp3 format, in each package, with basic chord sheets in pdf format. If you have bought the CD-ROM version, there is also a set of videos with Matt playing solos over these tracks, with a digital fretboard display. With the fretboard videos you can actually see how the solos are played, so you can use it for study purposes if you want.You can use the backing tracks for any purpose, for practice, for fun, or professional purposes.
Note that the chord sheets were made at various times with different methods and may sometimes contain different notation conventions. So you may encounter notations like Cmaj7 or CM7, and Edim or E°, Am7 or A-7, G7+5 or G7#5 etc. Normally the convention used is quite clear from the context, and should not a problem. In "real life" you'll also encounter these various notations!