Yes. These questions have been answered about a million times. Spend the next 12 hours reading through the forum threads and you'll find your answers. Get yourself a big pot of coffee, sit back, relax and start reading here.-->Teaching English In Taiwan.
One piece of advice. I recommend Kojen Language Schools. I know of one branch that currently has three Taiwanese employed and paid as "foreign teachers" because they possess a US passport. They haven't lived in America since they were little children, they are not in Taiwan on their US passport with an ARC card, and they never speak English except when they teach English. Oh, and their English is heavily accented shit. They are absolutely NOT native English speakers. So, if you are the real deal, an American who happens to look Taiwanese, you might try Kojen. If they are willing to hire non-native English speaking passport holders and pass them off as foreign English teachers, then they would surely hire you if there were a position available. :2cents: