Okay, I might be a bit of a geek. I used a Raspberry Pi to build a camera to look at the walkway outside my front door. Yes, a Nest camera would have been easier, but building my own was more fun. Like Sterling, I searched the Internet for instructions and copied the code I needed. It took me a few tries to get it right, but that’s all part of the learning process. You can teach yourself to program and build many projects with a Pi. (This page includes affiliate links.)