See
How to use ArcGIS samples
for help on compiling, setting up the debugger, and running the sample.
If the sample has associated data, you will find that the sample's zip file includes a "data" folder alongside the language folders.
However, you will need to update the sample to point to the location of the data once you have extracted all the files.
Browse to a map document to load into the MapControl.
Use the commands on the ToolbarControl to sketch new features, update existing features, update parts of a sketch, or update attributes.
Right-click the MapControl to access the Sketch context menu.
Click the Option buttons to change the edit properties.