Jack, if you indicate you’re going to use SketchUp for personal use you should get the SktchUp Make with the 30 day pro trial as sketch3d_de indicated. If you don’t indicate that, it will take you to the Pro download. Find the original installer that you downloaded to see which version you got. It’ll be very clearly indicated in the file name.
At this point you can download SketchUp Make here. If it starts with the Pro trial, you can disable it. See this thread for instructions. Substitute the right version number.