The A6 chord, like all 6 chords, is not the most common chords that you'll see in popular music genres. However, you will often see the chord that it equals: F#m7. The A6 chord has the notes A-C#-E-F# and comes from the keys of A, D, & E major. I have 16 open and closed A6 guitar chord shapes and list some popular songs that use the chord.
The E minor 7 guitar chord is an easy chord to play and remember. You will encounter it in songs in the keys of C, G & G major as well as E minor. I have 27 guitar chords for the E minor 7 chord and I list some popular songs that use the chord.
The whole tone scale is not just for augmented chords. Dominant chords with a flatted fifth note can be built from the whole tone scale. And you can build more 7b5 chords than you cam augmented chords. I cover all the chords that are built with this 6-note scale and I have closed guitar chord voicings for all of them. I'll even throw in some choice open chords.
You can build major, minor and augmented triads from the augmented scale, all with major sevenths. I have C augmented scale guitar chord shapes and discuss how to use all the chords that are built from the augmented scale with examples of the chords in popular songs.
The E sus chord is built by replacing the third pf a major or minor triad with the perfect 4th and has the notes E, A & B. The notes for an Esus chord exist in the keys of C, G, D, A & E major. I cover how to build & use suspended chords, show a song example of an E sus chord and have 18 E sus guitar chord shapes.
I created a guitar string "bend map" for my Larrivee acoustic guitar to know how far I can bend each one of my guitar strings. The map shows where I can only bend a 1/4 step all the way up to 1-1/2 step bend. It takes some time, but you should build a bend map for your guitar(s).