Here's a Mac 101
tip for you: want to quickly resize your Dock? Just move your mouse to the vertical bar on the right (or bottom) side of the Dock, where it splits between application icons and minimized windows/the Trash, and drag... up/right to biggify, down/left for enhanced shrinkitude. Fun for all ages! Click the image or here
for a movie demo.
If you want to move the dock to a different side of the screen, try shift-dragging instead
of just plain dragging.