C major chord
C barre 1st
C barre 2nd
Try in a chord progression
C - Em - Am - F - G - C
Chords that sounds good together with C major
The primary chords that sound good to combine with C in chord progressions are: Dm, Em, F, G, Am.
Chords that are likely to follow C major in progressions:
C (no3) is a C major without the third (E).
C/D is a C major with D as bass note.
Finger position (C chord)
Index (1st) finger on 2nd (thinnest) string, 1st fret.
Middle (2nd) finger on 4th (thinnest) string, 2nd fret.
Ring (3rd) finger on 5th (thinnest) string, 3rd fret.
Theory of the C chord
The notes that a C chord consists of are C, E, G.
To get C7 add Bb.
To get Cmaj7 add B.
To get C6 add A.
1st inversion: C/E (means that E is the bass note).
2nd inversion: C/G (means that G is the bass note).
Diagrams of these inversions
For pdf, see The Chord Reference ebook with over 400 chord charts.