The Visual Elements Of Facebook TimelineFacbook bring new interference for users and provide many opportunities to page administrators. From cover photos to profile images, but all have unique sizes that are not standard.
Social Buzz Labs graphic designer Erika Bentley created this infographic to help you understand picture sizes and terminology used for an attractive and engaging Facebook page using the timeline features for corporate pages.
In this infographic, they are showing you how to utilize your Facebook fan page for business and get your users attention on your business niche. I think this infogrpahic is the best option to understand Facebook Timeline.