I'm assuming this means that you clicked on the pervasive update button when it first showed up at the bottom and to the right of your task bar, and followed the prompts to reserve your copy of Windows 10n.
Strangely, I did this, but never saw an indication that it was downloading. I eventually downloaded when I felt like it, and am now using Windows 10. I wanted to test it out on my older laptop before updating my PC and wife's laptop from Windows 7 and 8.1, respectively.
So far, day-to-day, it's exactly the same for me as Windows 7. There are nuances and differences that I'll eventually learn in great detail, but day-to-day there was not a single thing I had to figure out in order to keep using my laptop as I always have.