I recommend taking all the introductory courses you can find on both AI and ML. If you like the introductory courses, and you feel compelled to move on, then chances are you'll do well in a job regarding AI or ML. There are also several ways into it, either through pure mathematics, statistical modelling, data science, particularly through learning about various algorithms and reading papers, or even through practical application within data warehousing or day-to-day programming. I'd say it helps to have an academic background in either IT, statistics or mathematics, though, but depending on what you're aiming for it doesn't need be a firm prerequisite. Btw. linguists or anyone interested in natural language ought also apply!