I started playing around with XQuery. On [w3schools][1] its a good tutorial. I just have some problems: I cannot test the stuff on the site. I found an online XQuery ([this link][2]) and its nice to play with it, but if I would like to use the XQuery on an XML file thats not possible there. Any good and easy tools for only XQuery stuff for windows? If I search online I could find only big overloaded tools and the most of them are not free. I'm confused.
http://www.w3schools.com/xquery/default.asp
http://demo.exist-db.org/sandbox/sandbox.xql
Answer
Feel free to check out BaseX; it has an interactive frontend and is easy to use: http://basex.org/. You can turn on the option "Realtime Execution" to execute queries with each key click.