Part of my new job is doing research for and preparing PowerPoint presentations -- occasionally even writing someone's talk -- and it's been a crash course of sorts. I've never, ever used PowerPoint before. In fact, it was kind of a point of pride that I didn't know how to use it.
Turns out, it can be a fun -- and functional -- tool for communication, as long as you don't use it as it's intended to be used. While some of the presentations I've made have been relatively straight forward, reading Seth's ebook Really Bad PowerPoint has given me some fresh ideas.
Originally issued five years ago -- five years -- it's still worth a read. Download it if you've got a PowerPoint you've got to make.