I don't know about now, but 20 years ago, statistics indicated that 2/3's of all accident have within the first 6 months of m'cycle ownership or on a new or borrowed one.
Makes a lot of sense. You only have so much attention to go around. If you are spending it on the mechanics of learning to ride, you are not spending it on looking out for traffic or problems with the road surface.
Be very, very careful when you start. Later, you can taper off to just "very careful".