Passed IBM XML Test with 73% Just prepared for 15 days.Happy to clear the exam as my company wanted me to clear it at the earliest.Not a single book followed totally on net for each topic and for SAX,DOM the apis are enough.
W3.org is surely a great resource.But dont waste time on reading the entire spec.Primers on each spec in this site are a good Ones.For DOM and SAX the API of various parsers is OK.Be a member of xmldev list.It really gives u exposure to various Xml areas and applications.Post u r XML queries and get the answers.Be sure to atleast having an idea about each category of the Syllabus such as DTD vs schema run time issues ..... All the Best.....