Explains which parts of ESL are most challenging for students and why, how to lessen anxiety/establish rapport with students (strong emphasis on fostering a warm, caring classroom environment), and lots of ideas for classroom activities to develop specific skills. Also good curriculum development advice.
If you don't have a teaching background and plan to move abroad to teach ESL, this is definitely worth it even if it's not required by the country/school.
Academically, it's pretty easy. You get two attempts per test and need to score at least a cumulative grade of 50% to pass the course. All of the content is in the readings, and the lectures basically repeat about 70% of the information with visuals/audio and more examples.
If you pay attention, you'll definitely be better-equipped to run a successful classroom.