This week's book giveaways are in the Cloud and AI/ML forums. We're giving away four copies each of Cloud Native Patterns and Natural Language Processing and have the authors on-line! See this thread and this one for details.
I found a little reference book - XML Pocket Reference by Robert Eckstein to be very helpful. You should download either the JAXP parser from java.sun.com or the Xerces parser from http://xml.apache.org/ and play around with the demos. <shameless-plug>Or you could wait till my Java Developer's guide to XML and eCommerce comes out in mid January.</shameless-plug> Bill