The length of time depends on everyone's qualification and understanding of music. If you have classes every day, you can usually play a box within 30 days. But the big show depends on the requirements of the venue for DJ! Everything has its difficulties. The difficulty lies in whether you have the heart to do it ... of course, if you know English, that's best. For a DJ, it is better to know English. More diversified! The key is on your own!