These are the easiest to write because they basically are just a simple listing. For example, the seven steps to ------. You use short declarative sentences, or even just short phrases, depending upon how complex the topic is. You take a topic and break it down into its component parts. Many brochures are just a more colorful way to present a series of components. In your periodicals you don't want to include too many "how to" articles or you come across as too "preachy," and that's boring.