You may be interested in these previous answers to similar questions. Many of these threads have multiple informative answers in them:
What Really Happened Between Edison and Tesla?
What is the historical consensus on the Tesla-Edison debate?
Was Thomas Edison really the "total dick" that people on the internet make him out to be?
Why is there this new cult appreciation of Tesla? Was he really as amazing as people make him out to be?
Nikola Tesla is usually depicted in modern media as the forgotten "mad scientist" that fought for AC current over the much less efficient DC current of the Edison Company. But how much of this is actually true? What all did he actually invent in real life and was it in fact better than Edison's?