Academic improving. Looking for an online tutor of Computer science. Need help with Racket programming learning

Looking for an online tutor of Computer science. Need help with Racket programming learning. Looking for a tutor in the United States who can tutor college-level course of computer science. It would be nice if he/she can speak Chinese. It is about the Racket programming. Please check for course description at: https://legacy.cs.indiana.edu/classes/c211/
Price rate: 50usd/hr