Let us recap on the information story so far. Chapter 3 lists the various information sources, together with their uses, limitations and accessibility. Chapter 4 explains the way libraries store and classify information, and how, by using catalogues and other aids, material may be located. In summary we have described what is available, and how to find it. The most important task, however, is to relate the two. If you are set an assignment, how do you decide what type of information is needed and which are the best sources to get it from? The ability to search out relevant information is one of the most important skills a scientist can have. This chapter describes an action plan to help identify and find the information you need. It may not solve every query, but it will help with most.