You've seen how you can render a single frame by pressing the F12 key, and look at it by pressing the F11 key. Rendering an animation is very similar as explained in the following steps:
Press the Ctrl key and the F12 key to start the rendering.
Look at the text across the top of the frame where the image is being rendered. It tells you which frame is being rendered, how long the previous frame took to render, how many vertices and faces there are, how much memory was needed, and other things. This text is for your information only; it doesn't show up in the final images or animation, as shown in the following screenshot:
When the animation has finished rendering, press the Esc key to close the render window. Then, press the Ctrl key and the F11 key. In a moment, you should see your animation. Notice how the lighting changes and how the speed of the cube varies.
Press the Esc key when you are done looking at your animation.