Lon Seidman didn’t launch on YouTube with the goal of becoming a top gadget reviewer. In fact, he stumbled upon that aspect of his career while struggling to run a video local news startup in Connecticut. Almost on a whim, he recorded a video review about one of the cameras he bought for his startup, and to his surprise, the video blew up.

Flash forward a decade, and Lon now has tens of millions of views across YouTube and Amazon. He managed to carve out a niche among a crowded field of gadget reviewers, and he’s now making a pretty good living through a mixture of YouTube advertising, affiliate sales, and Patreon subscriptions. We walked through how he accomplished all this in our interview.