Significant differences between 300-115 and 642-813 books?
I was going to start studying for the SWITCH test, and I still have the 642-813 OCG book from a few years back that I never finished. Since I'm currently in a financial crunchy, I wondered if I could just use the book I have and study up on whatever newer might have been added in the newest edition. Has it changed radically, or are the changes few enough that I could just pick up what's not in it from online study material? Yes, it would be ideal to have the newest book, but I don't really have the money.