I'm planning on taking IB in 11th and 12th grade, which I have heard is extremely difficult. Currently, I am a freshman with too much free time and breezing through my classes. I know when I'm going to have a tough time transitioning from my easy classes to IB when the time comes.
How can I prepare for my difficult IB classes? I was thinking of self-learning subjects by using books from wikiBooks, but I don't really the see point. Plus, all the information that I would learn through the wikiBooks would just be memorization, and have very little application.