Against E Major
Use the video to try each tone against a ringing E Major chord. All of these chords are E Major triads [E-G#-B only], though there are some E5s in there too [no 3rd, just Root and 5th].
So once we have some experience with the shapes & understand how they work, we can use them to create other chords by modifying the CAGED shapes. We can use formulas, or just experiment. Example formula: minor is R-♭3-5. From a Major chord, we flat (lower, one fret) the 3rd of the chord (wherever it appears). For the E form, the 3rd is the 1 fret on string 3. To create Em, we lower the fretted tone to the open string (G is the flat 3 of E). When we do this, we have Em. This is one way to figure out truckloads of chords.
So far, we've trained and jammed with the following scales: E Major, Em/G pentatonic, C Major [and G and D are on the table too, though we will work with those more coming up]. At this point, I'd like to run an experiment which includes all 12 tones. We play each tone and test them while a chord sounds. We will use E Major & E minor and the single tones on string 1. We can really use any audio for these types of experiments. You could record yourself playing any single chord and run the experiment. This is really the simplest way to solo...against a single chord.
This scale is called Jazz minor when it ascends and descends, as written. It is called Classical minor when it ascends Melodic minor, but descends Natural minor.