In the second sentence of the first paragraph, the authors mention cookbooks, catalogues, and telephone books primarily to

There are many roles that differ for american exchange students. these include assimilating to the culture of the country that one is in, being able to learn the language and communicate with others, as well as being able to understand what is happening in the courses that are taken.

The most difficult part of putting together a research topic is finding what i wanna research. my strategies would include finding a topic. giving a reason for this topic, summarizing the topic then ending it with why i chose to do this topic.