Aware that some of your arguments are better than others, and the same goes for your opponents. It is your job to please them, not the other way around. This is a simplistic way to categorize judges. However, it does help understand some of the variables. The type is set by the role the judge sees herself in.
All judges deserve our respect and our effort to adapt to what it is they are looking for.
Being able to adapt to different audiences will help you all throughout your life. This is the judge we prepare you for. The judge is open minded about debate, works hard during the round, wants to make an unbiased decision, has decent knowledge of the topic and debate procedures. All judges are there to educate, but Type A does it through making a good decision. This judge is generally an older or more traditional teacher who also coaches debate.