Although web services is and old technology on 2000’. The need to understand web services is still exist and important. The idea of web services doing a communication mechanisms, standardization of syntax, and distributed architecture will help you to design the future services. There are several book that I recommend you to learn about web services.
Book 1 – Web Services essentials
If you want to quick review the web services architecture, needs a refreshment for your master degree thesis as theoritical background. This book is for you. It has a lot of theoritical and practical issues on a web services.
Book 2 – Sams Teach Yourself Web Services 24 hours
If you want to learn step-by-step, focusing on how to develop a web services on any web platform this book is for you. This book is good for your starting point when you want to build your own web services.
Book 3 – Web Services, SOA, and Cloud Computing
This managerial like book is a good starting point for non-it people like manager, stakeholder, or newbie student that want to know the global evolution of web services. This book has plenty information about web services and others technology.