It was fairly sanitary, no gratuitous slams on Mexicans, women, Chinese imports and other things that have made the headlines over this campaign. He used a teleprompter, which means he took this one seriously and didn't want to make off-the-cuff blunders.
It was pretty vague. He came out for defending and advocating American interests, with out ever saying what those interests might be. He said ISIS would be gone, soon, but he never said how, or how far he would go to waste them. Would he send in the US Army to deal with them? Would he nuke them? Who knows?
He never did really say where he stood on free trade, although he made disparaging remarks about NAFTA. He is against "nation building" but he never addressed the problem of weak or failed nation states that revert to wildlands, harboring terrorists. You need to remember that Osama Bin Ladin settled into the wildlands of Afghanistan, where there was no effective national government. From this safe haven Bin Laden set up the 911 operation. This would not have happened had the United States done some nation building in Afghanistan after the mujahedin drove out the Soviets in the 1980's. Go watch the movie "Charlie Wilson's War".
The Donald made few to no concrete promises in this speech. Applause sounded kinda thin, to the point where I wondered how full the room was.