How to get started?
There are many online courses and some are free. And with a few good books one person can get started in this field. It is rapidly evolving field and new things are available all the time.
And below you can find the books I highly recommend to get started
Artificial Intelligence: A Modern Approach, Global Edition 4th Edition by by Peter Norvig, Stuart Russell
Deep Learning with Python, Second Edition 2nd Edition by François Chollet (Author)
Deep Learning for Coders with Fastai and PyTorch: AI Applications Without a PhD 1st Edition by Jeremy Howard, Sylvain Gugger