Often, you need to zoom in to see a specific object. Since AutoCAD 2005, the ZOOM command has had an Object option that makes this easy, but many people still don’t know about it.
Just select the object and choose Zoom Object from the Zoom flyout. The view zooms in to display that object as if you’d placed a window perfectly around it. However, this method is often easier than specifying a window, if you’re interested in one object.