strings named and numbered and my first chord

The 1st string produces an e note. This is the thinnest string on the guitar. Sometimes called the high e. The name of the string is usually shown in lowercase to distinguish it from the low E.
The 2nd string produces a B note.
The 3rd string produces a G note.
The 4th string produces a D note.
The 5th string produces an A note.
The 6th string produces an E note. This is the thickest string on the guitar. Sometimes this string is called the low E since it produces the lowest note


Below is the G major chord. You have to play all six strings and make sure that all the notes are ringing out.

You place your second finger on the 6th string / 3rd fret. Then place your first finger on the 5th string / second fret and your third finger on the first string / 3rd fret.

When it says the 6th string, that refers to the one on the top, closest to your head when your holding the guitar, the strngs are numbered 1 through 6 starting with the bottom string (high E) and going up to the top thickest string (low E)