I actually wasted a whole lunch hour on this. It wasn't as earth-shaking as the press seems to think. What I saw was a long speech and maybe 25% of the time spent on questions. One point he made was that he inherited a mess, something Obama said for roughly 6 years into his presidency. Both of them are right, the mess has been going on for decades. Trump was good enough to actually except Obama from this claim and recognized the mess has been with us for quite a while.
He also made quite a few direct statements as well as some comical jabs about the information leaks. On this I'm afraid he's right. Even Obama was wise enough to close the doors when vital, classified information was being considered. The fact the press had a straight line source is not actually a good thing in terms of national security since those leaks were not casual, they violated NSA warrants. Sure, we'd all like more transparency in government, but there has to be a balance to the information that might be considered strategic.
For the most part, he was ranting at the press and suggesting that he'd be accused of ranting at the press.
One thing I thought was interesting was a reporter asking if he'd meet with the CBC. He said absolutely he would and suggested she set it up. I wonder how that will play out.