For example, how to get from City Hall to Police Headquarters while obeying traffic laws regarding one-way streets. You will then be asked to identify a face with a name, or crime, etc. This is known as learning by association and with practice, you will become proficient at it. Learn to observant of other people and surroundings. As part of the hiring process, you will be interviewed by members of the police department.
Some people feel uneasy or uncomfortable when being interviewed.
One way to alleviate this problem is to practice. Begin with holding a normal conversation with a friend or relative. And then, progress to a question and answer session, having them ask you a series of questions. Remember, practice makes perfect. Again, be honest and straightforward with your responses.