Try this
http://wpftutorial.net/DataGrid.html[
^]
And here is a walkthrough from microsoft
http://msdn.microsoft.com/en-us/library/ee340709(v=vs.100).aspx[
^] (make sure you have ".NET Framework 4" selected at the top or use "Other versions" dropdown to select it)
I find datagrid/datagridview very convenient for "looking" at database data but it really depends on what you want to do with that data - for example you could convert the data to XML and view it in a webbrowser or, as KM Perumal suggests above, use a ListView control.
The controls that come with VS should be sufficient for your needs - in other words I wouldn't worry about buying / downloading other toolkits just yet. A lot of people use Telerik extensions if you do decide to go down that path, but I've heard you may have some issues with VS2010 Express version - I'm not sure how true that is from personal experience. I would recommend that you try to get as comfortable as possible using the "standard" components first though.