Hey folks, sorry I'm not there- but believe me you wouldn't want me in the class I look and feel awful! But not too awful to keep from watching YouTube videos on swift!
Please watch the video below, the guy is young, but does a great job of showing a 30,000 foot view of Xcode. He has a tremendous amount of information in the video. My suggestion would be to watch the whole thing, trying to follow along as best you can. Then restart the video with Xcode open and try to keep up with at lest the first half, pausing as necessary (though I think some of you will be able to keep up with the whole thing).
Challenge: See if you can write a program that when you press a button it changes text or text color on the screen