Right now I am riding my new road bike on a trainer due to a broken collarbone suffered on my mountain bike. I found the trainer helpful with the new bike, I realized I need a longer stem, also it has helped with the clipless pedals, WILL NOT use them on my mountain bike so practicing on the trainer has been helpful. I think when I get to actually road ride my bike, I will be more comfortable with it since I have already ridden it for some time. I know it will be different on the road, but now I know the fit and feel of my bike.