You're probably thinking that you've done a lot of work to simply see a bit of content displayed in a browser. You might also think it would have been easier to simply code it all in HTML. That's where other tools come in handy. In the past few years, a flood of new XML-related development tools have come on the market to make it easy to create XML documents and associated style sheets and DTDs.
With these tools, you can create valid XML documents without hand-coding any XML tags. Just open a new document, specify what DTD to follow, and the software lets you know at any given point what elements and attributes are allowed and required. You can also create a well-formed XML document without an associated DTD. In any case, XML editors help you avoid the tedious task of typing tags.
You can surf the Internet to find free trial versions of XML editors such as XML Spy, XMetaL, and XML Pro. You'll also find loads of information about XML and related technologies.
Want to take an online course to learn more? Try online-learning.com. They have introductory and professional courses that you can complete without travelling to a classroom.