If you just learn to be rice rolls, you don't need to spend thousands of dollars on training courses. Watch the video online, try it a few more times and you should be fine. In addition, opening a shop is not just about technology. I suggest you work in a well-run rice rolls store for several months, regardless of salary. Mainly to secretly learn how others open stores. After work, you should be able to avoid many pits if you have experience. Hope to adopt!