You rarely do learn anything in your first year, dont worry too much at this stage, because of the vast amount of theory you have thrust upon you especially in the first year you'll find you only remeber it when you need it. As for practice first year will mostly be about observation and doing the rubbish jobs. Dont be afraid in your second year to take control of your learning and demand more from your University experience.
The best thing you can do is talk to your tutor and see if there are any options, you can carry your credits onto another course.
And I would urge you to give the second year a try, not all of your placements are going to be a good experience unfortunatley as not all mentors are as inspiring as others.
What is it that is causing you to feel this way, is it the job, the staff, your experiences so far?????