This is dead easy. I've many spent hours trying all sorts of guides to finally prove that all you need to do is follow the instructions given at this link.
This will probably work with other Wacom tablets.
OK you've followed the above link so now find the link 'get the drivers' and click on it.
Now you have a choice of Kernel drivers and X11 drivers. You want the 'input wacom' kernel driver and the 'xf86-input-wacom' X11 driver.
Clicking on either link will take you to a page with full instructions on how to download and install the drivers. Read the page first before you try anything. I had problems with the 'autogen script' which is not an issue as there is an 'Install' file in the archive with instructions on how to proceed. One word of warning, when installing 'xf86-input-wacom' driver be sure to check the dependencies where it is mentioned in the text, you need a few development packages installed to build it (if the build fails because a package is missing it's the development package). That's it. Log out and in again to restart X, plug your tablet in and it should all be working. The buttons on the stylus are configured as mouse left and right click (lower button is left).
You will need to repeat this each time the kernel gets updated.