By default most browsers will pop up an annoying prompt when you click on a Google Earth link.
Configuring your browser correctly allows you to avoid the prompt and access Google Earth via a single-click on a web-page.
Click here for instructions on how to correctly configure your browser.
If your mouse has either a middle button or a depressible scroll wheel, you can tilt the view by depressing the button and moving the mouse forward or backward.
More tips on navigating in Google Earth.
1. Start the Ruler tool by clicking the icon on the toolbar.
2. On the window that pops up select the "Path" tab.
3. Hold down the mouse key and drag the cursor along the path you wish to measure.
The distance will be displayed in the Ruler window.