This Research Guide to Instruments of International Organizations is the product of years of teaching experience in methodology of law. It focuses on how to find and use instruments of international organizations and is mainly intended to be a practical instrument for students at an advanced level, lawyers and public servants. In a practical way, this book offers a detailed description on how to do research in sources of international law in the most efficient way. The guide examines the different sources of international law and provides an answer to a variety of questions one may be confronted with when dealing with international law. What are these sources? Where can I find them? And once I have found them, how do I read them? The main focus lies on the wide range of electronic databases on international law, although reference is also made to the traditional means of finding sources. The use of screenshots and clear examples make this book a very practical instrument and an extremely useful tool.