Many AI courses are available on the internet, but I advise you to go with the courses freely available on udemy and Coursera. and also you can go with the Youtube videos, some of the ai courses that you can choose are:

1. Artificial Intelligence: A Modern Approach - Online course by Stanford University (Free)
2. Introduction to Artificial Intelligence with Python - Udacity (Free)
3. Applied AI with Deep Learning - IBM (Free)
4. Deep Learning Specialization - Coursera (Free with optional certificate for $49/month)
5. AI for Everyone: Master the Basics - Coursera (Free with optional certificate for $49/month)
6. Reinforcement Learning - Udacity (Free)
7. TensorFlow Developer Certificate - TensorFlow (Cost varies by location)
8. Applied Data Science with Python Specialization - Coursera (Free with optional certificate for $49/month)
9. Natural Language Processing with Deep Learning - Coursera (Free with optional certificate for $49/month)
10. Machine Learning Engineer Nanodegree - Udacity (Cost varies by location)

Hope this will help you