Brochures may look differently for different projects and purposes. Take a look at some samples of brochures I have created.
If you are looking for more in depth information about brochure content and design, try checking out some of these resources.
The Ultimate Marketing Toolkit: Ads That Attract Customers. Brochures That Create Buzz. Web Sites that Wow. by Paula Peters
Although there is a lot of interesting information in this book, some of it is dated. But I really like the section on creating brochures in this book. It provides step by step recommendations for content and layout and some real life examples.
The Elements of Style, by William Strunk, Jr. and E.B. White.
This is a good general writing resource. It covers a lot of the common writing mistakes and explains writing style issues very clearly. There's even an illustrated version.
If you need a brochure quickly that doesn't cost much and you don't mind using a template, there are many companies that provide templates for you to use. However, it is very important that you look around in your field and make sure you aren't using the same template as one of your competitors or another business in the same area. Templates can be a quick fix, but a custom design can ensure that you get the feel, branding, and style that fits your business or organization.