I took the course as Temple is just 2 hours away from me. I learned so very much. I highly recommend the classes. David & Jeremiah are wonderful teachers. I learned how to get into those machines & they are so very interesting. Now ya'll are right about warranty work. You need your dealers that sold your machine to ya for that but machines that there is no warranty left on, this class is wonderful! There are a lotta machines that are outta warranty yet still need to be serviced yearly. Sewing machine oil evaporates in a year. Even if ya had your machine serviced a year ago & haven't used is since, don't turn it on as ya will be running it dry.