Hi,
if you've installed the Dev Express components, then you should find a lot of examples in their installation folder or in the start menu. I don't have the latest version but there are more than enough well documented examples to get you started. Please try them out and ask us more specific questions if you have any problems.
I also recommend you to see the dev express forum if you have questions:
http://community.devexpress.com/forums/[
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You can also have a look at this tutorial video that shows how to begin with these controls:
http://tv.devexpress.com/#ASPxChartsGetStarted;XtraCharts+Suite.product;1[
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