I too was nervous about the learning curve, I found it good to get used to the process using a trainer, less chance of falling. However, always make sure your trainer is snug on the bike, I put mine on in a hurry one day and it came loose mid pedal, on the way to the floor my arm caught my reloading press bolt, so yes, it is possible to get hurt on a trainer while clipped in, lesson learned. But it got me used to the process and comfortable using them.