One of the most popular bands of the late 70's and early 80's was Styx. They were hugely popular with members Dennis DeYoung and Tommy Shaw on guitar and taking up songwriting duties. And of course one of their more popular songs was Fooling Yourself which had a quite difficult strumming and chord change pattern as an intro.
For a beginning guitarist this pattern and the ability to change chords quickly enough to make the song sound good presents quite a challenge. The chord changes are really not all that difficult, what makes the song challenging is the speed at which you need to play them to keep up with the actual tempo of the song.
The guitar tutorial video from YouTube below is excellent and goes through each section of the song in a step by step manner. It took me about a week to get the hang of the chord changes and approximately another week to be able to get up to the speed at which the chords need to be played. Don't worry if you don't get the chords or the speed of the changes right away, but keep practicing for a couple of weeks and you will be amazed at your progress. Set aside an hour a day and you will probably get the hang of it in a week or two. Enjoy the Styx Fooling Yourself video guitar lesson below: