Hey Chichi! I am currently in second year Ultrasound. I am in clinical placement I for that matter
You've chosen a great field
Ha ha~ It's really interesting, learning about theories while applying them right in school! Yes, books were very expensive, I spent approximately 1500 dollars plus on it, but these books will last you a life time! You will only need to buy manuals and elective books in Third Year. I suggest that you get books AFTER your lecture for every class, but the editions have changed for most of the books, you don't want to get stuck with the wrong edition and when it comes to testing and exams, it'll make it harder for you to study! Second year Ultrasound is a little tough in the first term, but if you are willing to work, you will do just fine! Hope this helps