Keep in mind that there are things you can do within the A3 community which may not be against any rules, but are generally considered annoying. An example of this is typing in all capital letters. This could irritate people and make you look bad. Don't type your posts all in capitals in order to get attention, as you'll only put people off of reading them. Flaming people, needlessly insulting others and other such activities will most likely anger even more people. Also, many people look down on those who use internet shorthand ('u' instead of 'you', etc.), especially if it is highly overused.
You will pick up what is generally liked and disliked by the community in general over time. If you want to get along with others, or have questions answered, you'll probably find that you have an easier time if you do not break the unofficial "rules" that the community tends to abide by. The best way to treat others is how you would wish to be treated yourself.