The Songs & Lessons PAK is an assortment of some independent collections, apparently making available (part of ?) the content the practice window utilizes. I've got a bunch of questions about it. I'll refer to this description: https://www.pgmusic.com/addons.songsandlessons.php?os=win.

In short, it boils down to: Where's the user guide?

First of all, the PAK file disperses numerous 'MIDI Fakebook' files over several subdirectories under '/bb/Songs and Lessons/. Are those the "standard" files everyone refers to when it comes to "just loading a song", e.g. with SongPicker? If so, where should I set which path?

Next, having installed the PAK, I can open the '101 Riffs', the 'Master Solos' and the three 'Other' lists. But how am I supposed to work with it? All I have are file names like SPS025. Of course, I can open each and every one of them and look up the song memo for some hint.
That's tedious, and the hints are scarce.

Then, I can't open any 'Lessons' (Guitar, Piano, Saxophon, Vocal). 'Songs & Lessons PAK' doesn't mean I paid for 'All Songs & Lessons', I guess...

I don't think I want to pose any questions concerning PowerTracks...

Thanks,
Rainer