According to the development stage of the company: newly established enterprise (such as the new generation entrepreneur class), rapid development (such as the president's practical class), stable breakthrough (capital operation) \x0d\ by position: business owner, manager and grass-roots staff \x0d\ by professional direction: management, marketing, finance and production. \x0d\ Remember to choose the right course, otherwise the loss will outweigh the gain. I hope I can help you.