for major problems. Regardless of wich species you choose; read read read, regrettably go on the intranet, go to your local librery but study, ask questions, whether possible find persons with them and question them till they kick you out. Molly is right (sorry people) there is a world of difference between large and small parrots, just know what you are hastily getting into.
P.S. Stay away from a cockatoo for your first big parrot, I have seen too many cockatoos become a families first and last parrot.