XSLT is the language, especially designed by the W3C Consortium for processing XML documents and hierarchical data in general. XSLT 3.0 adds new, amazing features to the language. This is the first of two courses covering packages and separate compilation, patterns that match not only nodes, but any item, modes as explicitly declared objects of the language, the new sets of built-in templates which are now six-times as many as those in XSLT 2.0, the new try/catch mechanism for the detection and graceful recovery from errors, dynamic XPath evaluation, static variables and parameters, text-value templates, and more. The second part of these two courses will cover native higher-order functions, streaming of documents that cannot be held completely in memory, a new "map" datatype, processing of JSON data, and other new and powerful features. Learn in depth the new features of XSLT 3.0, and be part of the demos of their real-world practical applications. Be the first to know and master this latest, extraordinarily powerful version of XSLT and enter a whole new world of knowledge, understanding, and problem-solving strategies.