Chord boxes are sorted from the easiest to the hardest.
Download G Chord Guitar Finger Position Gif. Guitar chords are often written out in simple charts like the one on the left. Finding the chord shape requires muscle memory, which you must develop through repetition.
The g major chord is one of the first chords beginner guitar players learn to play, and it's really easy—you'll just need three fingers. G minor guitar chord shapes. I find it easier to use the middle finger where the index since it's you and your fingers playing that guitar, then the choice must be yours.
X = don't play string o = play open string if the same fingering appears for more than one string, place the finger flat on the fingerboard as a 'bar', so all the strings can sound.
Third and fourth fingers go on the b and high e strings, 3rd fret. Here are some free chord charts geared especially for visual learners. Am, bm, c, d, em. Fingering this g major chord.