Melissa by Allman Brothers Band is fun to learn and play on the guitar. The chord melody makes it a great song to learn as it is easily recognisable. It is also equally as good for beginners (excluding the barre chords) as well as more advanced guitarists.
The names of the chords in this song are hilarious. We have B7sus2/E and some other crazy names. Many times the composer is not really thinking about the names of the chords at the time of writing the song. He or she simply put chords or shapes that sound good together.
It is not until later when somebody needs to note or transcribe the song that the real names of the chords appear. So don’t be put off by the names, as it is quite an easy song to learn!