What chords should you learn first on the guitar? Good question.
Answer: G, D, Em, and C
Learn those four chords in that order and you can play a million different songs (see video above for proof**)
Switch up the order of the chords or take one or two out… now you can play a billion different songs.
To make the quickest and most effective progress, start with those four chords.
You can learn to play them here, here, or here.