So I am in the area in between years 10-11. I am currently on exchange and I have a lot of time so I thought I would study for year 11's topics so that the next few years would be easier. The main subjects I wan't to focus on are Biology and Chemistry. I had bought a book without doing any real research beforehand (excel's HSC Biology) but I found that it was mainly used for revision. I would just like to know what kind of textbook would be ideal for me to use to study for Biology and Chemistry. Thanks