If you have definitely decided to live in Portugal or you may be staying for an indefinite period then learning the language can work wonders. It is not too difficult and there may be local colleges that can aid you with the dialect. You will certainly notice the difference once you can speak Portuguese because even though it is starting to be more common for most countries to have English as a second language, the friendships you could make overall will last if you take the time and effort to settle in.