
Left Handers

If the root note on the 6th string is A, the chord will be Am... etc.
This is a standard 'Em shape' barre chord... extremely versatile.

Left Handers

The 1st chord is most commonly used - the standard 'Am' shape barre chord. The reason for so many circles with the number 1 is that you have options depending on how you want to play it.
If you only play the blue notes, and omit the optional notes, you need to avoid hitting strings 1 & 6 unless they are notes within the chord, which you may want to use, however listen to them first. Although they may be part of the chord, they may also dominate the chord or even 'muddy' the chord depending on whether you are adding a root, 3rd or 5th... always listen first, and then decide.
The first example is easier than the 2nd, as the chord may be a bit of a stretch for some, however it is worth the effort.