Hello, please help me by explaining how to use the Time Chart Wizard or the correct expression to display Sales data for the periods 1 October 2009 to 31 March 2010 versus 1 October 2010 to 31 March 2011, for example. Thank you.
Your best bet is to go to Services > Training > {On Demand}. There is quite a few tutorials and explainations about the basic functionality on qlikview and how to use the wizards.
Choose either, designer 1, or developer 1 courses. There is material that they give you to download and practise as well as a step-by-step tutorial on the course material.
If you have not done any of these online tutorials, I would strongly recommend you visit these services and try them out