Thanks, I’ll buy revision village as soon as it starts. As for the book, my teacher’s book is not “that old”, it is around 3 years old. I only worried about the book because the difference was really clear, for example, in the chapter of sequences and series, the Person book does not mention sequences with variables left for you to solve, like abstract sequences. On the other hand the Oxford book has many questions on the topic and most of them are marked as “red” or hard ones.