On the point of spaced learning. I do feel that the section relating to barre chords just goes on too long in what appears to be one long chunk. I reached the stage when I clicked onto the next lesson and my heart sank when it was yet more barre chords. For me it would be better if it were interspersed with other lessons just to mix it up a bit. To get around it I've devised my own programme where I do say 5 minutes finger exercises, 10 minutes barre chords, a little time re-capping other things, then go onto learning a song or because I've just bought a cheap looper, mucking about with that and trying to jam a bit over the top of what I do. Not very successfully I ought to add. I must admit though that the concentrated lessons on barre chords did for a while start to dissolution me a bit and I started to dread picking my guitar up because I was getting nowhere slowly. I do appreciate it's all about practise and repetition to master things, but speaking for myself as possibly one of your more senior members, it take me longer than most to master something and need to feel I'm getting somewhere, which I didn't for a while.