How to speak dragonese

I am reading this book called How to speak dragonese. This is a really funny book and I got the book from a girl at my school. She was helping me find it. She got the idea because she was looking for How to train your dragon. It wasn't there but she told me about that book that I am reading. She already read it. Now I am reading it. There is this one picture that is at the beginning of the book. The first chapter is called Boarding an enemy ship lesson. There are some weird sea animals like sharkworms and dragons that live under the sea. The kid is a viking and he is not good at lots of stuff only at sword fighting. They even tell you about the animals and there are some pictures. This book is really funny!!!