As a beginner, you only need to learn a couple acoustic guitar chords to start playing your favorite songs. In fact, there is a great book of 50 songs,
The Guitar 3 Chord Songbook
by Hal Leonard that has only
three chord guitar songs,
using chord C, chord D and chord G. This book includes favorites, such as "All Shook Up", "Hound Dog", "Lay Down Sally", "Sweet Home Chicago, and "Werewolves of London".
Reading Chord Diagrams
Below are diagrams of all seven major guitar chords. The frets 1, 3 and 5 are indicated on the diagrams for your reference. The "X" means that the string should not be strummed. The numbers within the black circles represent the fingers to be used. A guitarist's fingers are numbered 1 (index finger) thru 4 (pinky), as shown in the diagram below.