If you find reading about math difficult or maybe not very interesting, this video walkthrough may interest you. Mivalina simplifies math concepts and presents them in an easy-to-understand video format. Their PEMDAS video is no exception.
Not only does the video lesson explain the order of operations and PEMDAS in a straightfoward way, it also takes you through some example problems that will help you feel more comfortable using PEMDAS in the future.