I wanna start to workout, how do I start.

Hey folks. I'm currently 22 years old and I decided to start my workout routine. I started to watch some YouTube video on how to workout but the problem is my fit is as bad as a soft tofu. I was never a sports guy, I'm quite the opposite of that in fact. I would probably pass out half way through those routine. But I wanna build up confidence and impress someone. Any advice on where do I start? Any advice is much appreciated.