Reading this thread with interest as I too just purchased my first road bike (riding a hybrid prev) and took it on its first 'real' ride yesterday. Goodness, after about 15km I stopped and my arms were so sore and stiff from holding on for dear life!
I nearly toppled when going across a bridge on the pedestrian section and the wheel went through a vertical 'ridge' in the pavement - those darned skinny tyres seem to want to be eaten up by those sorts of things. Then I had another freakout when I had to turn and wind down a ramp off the bridge - the other cyclists seemed to be looking pretty wary at my wobbliness! It was exciting but quite nerve-wracking how differently it handles from my solid heavy old hybrid - quite squirrely and skittish.
Am really hoping it doesn't take too long to adjust to - have signed up for my first metric century in October and really want to take my lovely light fast road bike along rather than plodding on the hybrid!
2008 Giant Elwood hybrid/Crappy gel with big chunk out of it!
2010 Giant Avail/WTB Deva Womens