Guitar Chords in A Major
The guitar chords in A Major are A, Bm, C#m, D, E, F#m, G#dim.
In this set of triads, we will move the Bm shape to the C#m (fret 4), rather than use a C form (with a flatted 3) for the C#m.
We have a majority of bar chords here as well (I, ii, iii, IV, vi) - keep in mind that you can use fragments or smaller pieces of any chord. The dominant 7, E7, is included and substituted in the chord scale for G#dim (G#o).
Major Keys: C G D A E B F# Gb Db Ab Eb Bb F | Chart of Every Key

Practice fretting all of the chords in the Diatonic Triads above. Keep in mind that G#o (the last one) isn't used much.
Practice the scale. If you need help interpreting the Scale Frame in the middle box above, please check out this scale lesson. There are 3#'s in the key of A.
Play the Chord Scale and the progression (I-vi-ii-V7-I). This is one of the world's most popular progressions. Notice the E7. It is also in the chord compare lesson.
Write your own chord progression from the guitar chords in A.
As you write your progression, use these general progressive harmony guidelines, yet experiment even with the opposite (regressive harmony). There is no right and wrong, just better sounding (according to your ear).

Finger Challenge
In A, the most difficult chord to fret is the F#m. Remember, that you can fragment it. If you do decide to bar the entire chord, only press the index fingertip & the part of your finger that falls over the 3, 2, and 1 strings. The index should be slightly curved or rounded & leaning slightly on the bone edge.
Guitar chords in A and all Major keys
Major Keys: C G D A E B F# Gb Db Ab Eb Bb F | Chart of Every Key

