Yes.  Invisible Technique is Joe Robinson's teaching platform.  When you post questions in any Invisible Technique course, they are answered by Joe.

The lessons in this program teach you how to practice using 15 minute blocks.

Using 'deliberate practice' and the 15 minute backing tracks, you can make tremendous progress with as little as 15 mins per day.

You can sample the courses here:  https://www.invisibletechnique.com/improvisation-sample

These courses are aimed at intermediate guitar players.  If you can play basic chords and melodies, you will be able to work your way though these courses.

For more advanced players, if you don't feel totally confident when improvising on the guitar, these courses will help you.

No, these are improvisation courses.

If you are a fingerstyle player who struggles to jam, these courses will teach you how to.

A level 3 course is tentatively planned for 2026.  The level 3 course would cover the harmonic minor, melodic minor, diminished and altered scales.

Yes, the courses are a one time payment and you will have lifetime access.

You can email [email protected]

Invisible Technique offers an easy 30 day refund policy - if you are not satisfied with your purchase, just email [email protected] for a no-questions-asked full refund.