Want to Learn

I want to learn Chinese. Every year,  a lot of Chinese people travel to Japan. Especially, they often come to Osaka. When I was in Japan, I live in Osaka. Actually, I often see Chinese near my home. Almost Chinese tourists have a big group, they walk around with a lot of people. They enjoy taking a picture or eating dinner in Japanese restaurant or bar. I have a part-time job. I work on Japanese bar. When I work on there, Chinese tourists come to my bar to eat and drink. Then, they order some foods  and drinks in Chinese. I can't understand Chinese. I try to talk with them in English. But, they can't speak English. It's difficult to communicate with Chinese. So I want to learn Chinese to communicate with them when I work on bar. If you know Chinese, please teach me!