While paramount to the modern economy, understanding how the banking system works has been usually cast aside from overall economic education. Even in the aftermath of the recent financial crisis, which has underlined the vital importance of banking in the economy, the workings of the sector remain a black box. To this end, this book provides a comprehensive and easy to read review of the banking sector, covering all issues related to commercial and investment banking and providing experienced as well as non-expert readers the opportunity to expand their knowledge on these topics. After going through the book, readers have the opportunity to gain a deeper knowledge regarding the commercial and investment functions of the banking sector and the ability to evaluate the potential outcome of policy actions.