Prisma: Continua - cuaderno de ejercicios (A2)

I purchased this book, as it was used in a taught Spanish course. This is the only reason I would buy it, there are better and more complete products on the market. My advice would be to buy one of those. However, for the class it was fine. I'm not a fan of the learn by topic structure, as find I need a basic amount of grammar to be able to converse. Many courses are based on topics, so perhaps that is just me.