In layman's term, Artificial Intelligence is giving the abilities to a machine for performing a task that reduces human effort. This ability is given with the help of programming tools and techniques that we created for incorporating the machine with the potentiality of accomplishing work without human interference.
Artificial Intelligence is a very interesting field of study. If you are curious about knowing the technicality of Artificial Intelligence that how actually things work then go through this Artificial Intelligence tutorial.
Also, if you want to learn AI from scratch you must go through this tutorial:
For getting a job as an AI engineer you should be a professional in AI and you need to have a certificate for proving it, so, you should go for an Artificial Intelligence Online Course to make your career rise to the next level.