I started the XML Master Exam preparation over 2 weeks. This is the scope of the XML Master (Basic) Exam preparation.
The official XML Master Basic Examination Guide
I'm reading two resources for the Section 2 - Creating XML Documents and Section 3 - DTD.
1. The W3C XML,DTD specification , and
2. Sams Teach Yourself XML in 21 Days
After read these materials, this is the scope and reference materials recovered relation.