See this thread. It refers to migrating to a new version of SketchUp but the same thing applies to installing SketchUp on another computer. You can copy the folders for Components, Materials, Styles, and Templates to a USB stick and take those home with you. Make a screen shot of SketchUp at work and take that home too. Don't copy extensions, though, unless you get a kick out of chasing loading errors and other problems. Install them fresh to make sure you have the current versions and they are installed correctly.