For those among you who would like to jump in quickly, "How do I?" topics provide "walk-through" lessons on the use of IFs. If possible, print the topic/lesson of interest to you and then follow it through carefully. It is usually best to proceed through the lessons in sequence. And taking at least a quick look at the Purposes of IFs before you start the lessons will be productive, because you must know a little about the components of IFs in order to use it effectively.