Trump had some serious missed opportunities to score some points against Hillary. The time when she talked about how he wasn't releasing his tax returns and "what is he hiding" didn't get the trumping response I was expecting. Same thing when she was talking about cyber security and he didn't bring up her email server.
She did better on not looking sick than I had expected. However, her nurse was in the front row and immediately after the debate Hillary went right over to her and did the whole finger pulling thing. There is something wrong with her health, although she handled herself well last night.
Trump's biggest job was to show that Hillary's main attack themes against him - that he's unstable and racist - were wrong. I think he succeeded. He didn't come off as unstable, just rambly and, well, a little boring. Probably that was the intent. I actually think that this is more important than a lot of people think.
Trump seems to learn as he goes. I expect he will give a better debate performance next time. It's hard to see how Hillary could improve, and there are a lot of scenarios where she could do worse. If the goal is to peak right before the election, Trump seems to be in a better position.