While technically, I still work there, I haven't been called back in years. Most of the courses that I teach have gone online through OntarioLearn and the pay rates vary a lot for them.
While I taught my courses in introductory computers, Excel, Hardware Fundamentals and Linux, I learned how to do with a few difficult students and to adapt my course to their needs. Flexibility is a large part of this job, especially when teaching adults. Planning engaging activities is important, too. It was challenging at times, especially course development but it was fun to be in the classroom.