Chapter 7 contained for most part how you collect data from different method. But more in detail how to do interviews, gather data and observing. The method itself helps to manage gathering data. Different kinds of questions and observation styles also help you planning of data gathering more easy and simple. If we start with interview, it was important that good relationship and goals were clear from the start. Making it more comfortably for the target. Collecting data had a number of ways to gather. You could film or audio record it or take notes, but a combination of the three would be best in my opinion. Another way to collect your data is through questions or survey. The advantage of survey is that it is time efficient and easy while question is more personally and easy to tweak the words. Both should be used in case of you met a person with handicap.
In chapter 8 they talk about quantitative and qualitative analysis. Quantitative date is often data in form of numbers that can easily be translated into numbers. Example time or numbers of attending this event. Qualitative data is more suited for data from image or interview.
Last in chapter 10 the main aim is to describe different kind of requirements. What, how and why you do it the way you do and how you analysis your data.
Question: should you divide young from adult or use a specific age interval when you chose your target group?