A Chord Form Basic Mods
Basic mods include AMaj7, A7, Am7, Am, Asus9, AmMaj7.
"Let's jam in A minor" or "Let's jam in C" = move this frame to P5. The open strings are available as well. Think of tuning, the 5 frets, except the 4, are also open strings. The 4, the B tone, also works for this audio. B is half of the tritone B-F. The F will also work. When both are added, we have C Major/Am proper. Here's an audio track for you to improvise, to experiment, to test the tones with sound. You can also use any song in the key of C [less chance of things sounding 'wrong' if all of the chords in the song are in the key of C].
Form: A B A B : Part A: Am G F Em | Part B: F Dm Em Em
The fret number can be viewed as the the 3 finger [the root on string 4] or the 2 finger [5th on string 5]. Memorize the names for these chords in each position.
Next we will play the scale linearly on string 5, then find equivalents in P1. Once in P1, this is 54 of our 7 Majors system. On string 5, this scale is an octave lower than the C Major scale on string 2. Octave = same tone, twice higher or lower. Play the linear version on string 5 in any rhythm/fingering, then match up the equivalents in P1. Then play scale in P1 using finger-fret assignments. Exact tones = unison equivalents. Unison means exact same tone. They are equivalents.