Hi Nicole,
There is a web site that you can use to convert 10 to 9, www..icd10data.com/ICS10CM/CODES. I had to use this plus I was able to borrow a book. I also went to AMAZON and purchased a used ICD-9. I think the book along with shipping only cost around $19. You will need it in CHapter 10 as well. I know I used it in that chapter as well. If you have any questions just let me know.
I finished my course on Monday, plus I have a part time job doing front office work and let me tell you I think it was a great place to start.
Alana