SketchUp Outliner Window
Another quick Google SketchUp trick that I am finding usefull…the OUTLINER window.
This tool, actually a window available under the WINDOWS menu, displays all of your “components” and “groups” in a single list or outline. You can right click on one or more of the components in the list and click “HIDE”. This makes it easy for you to HIDE all of the components or groups in your drawing except for the one that you are currently working on. Once done working on the single component, go back into the OUTLINER and unhide all of the rest of the drawing.