The author has taken the possible measures and made it easy for the reader to use the easily available resources, including most of the steps highlighted in the book that is leveraged using the developer instance, which is available for everyone. You can reset it at https://developer.servicenow.com/app.do#!/home. Moreover, for any further clarifications required on the subject, you can navigate to https://community.servicenow.com/welcome. Also, the latest documentation and further details are available at the ServiceNow wiki, which has a vast majority of topics covered. Some of the topics or images might have references to ServiceNow wiki. ServiceNow is a trademark of ServiceNow Inc. who owns ServiceNow. The author has no direct involvement with the company. He has just utilized the product capabilities and features to complete the book. The book started the journey during the Geneva release. The author has taken all the measures to update the versions to Helsinki and Istanbul. You might need to refer to ServiceNow wiki for the latest documentation if some of the topics are not clear and you can also get clarification from the ServiceNow community. The author does not warrant that all the instructions mentioned in the book might work the way they are described. All the steps described are based on configurations and settings of various instructions described, for example, IP addresses, attribute information, and other information pertinent to the environment and settings. Furthermore, the author has not utilized any of the external resources either from his employer or other third-party resources. This book was fully written by the author using his own personal developer instance available at ServiceNow.