Hello Smith,

Before you start a course in AI and Machine Learning, you need basic and in some cases, high knowledge in certain programming languages. Here are a list of them:

1. Python
2. C++
3. Java
4. JavaScript
5. C#
6. R
7. Julia
8. GO
9. TypeScript
10. Scala

Machine learning is a growing area of computer science and several programming languages support ML framework and libraries. Among all of the programming languages, Python is the most popular choice followed by C++, Java.

Hope this helps you.