Caesar is into gaming. He wants to create a YouTube channel to make "Let's Play" videos. Leo says that Twitch is a better option and he can save it to YouTube after he plays. He'll want to record the game play with an image of him in a box in the corner. Leo says he'll want to use OBS for that, and he'll also need a camera.
The Logitech C920 is an excellent USB webcam. A lot of gamers use it. It's also on sale for $50 for Black Friday. He'll also need a mic. Blue has great USB mics. Caesar can also look into Shure's Motiv line.