Well, it's a very broad sector at this point and it's only growing. So, I would recommend researching the categories of jobs in AI and note the required skillset needed. I'm sure you could find plenty of online courses once you've narrowed down your vision. The fundamental concepts of AI are the same across the board, so it would do you good to start with the basics and go from there.
"Impartial observers from other planets would consider ours an utterly bizarre enclave if it were populated by birds, defined as flying animals, that nevertheless rarely or never actually flew. They would also be perplexed if they encountered in our seas, lakes, rivers and ponds, creatures defined as swimmers that never did any swimming. But they would be even more surprised to encounter a species defined as a thinking animal if, in fact, the creature very rarely indulged in actual thinking."