It's a Qbook. It has questions and answers. If you need study tips or strategies, try websites, blogs, your school advisors. If you want practice questions, this is a good resource.
This will definitely not replace using an online QBank, but it has USMLE-style questions with decent explanations, in a portable format so that you can study even when you can't be on your computer. I actually keep it on my nightstand and do some questions every night in bed (nothing like board studying to make you sleepy). It is a better Qbook than the First Aid Qbook, which has many errors and sometimes weak explanations. Overall, I'm pretty pleased with it.