Once the battery is removed, flip the laptop over and open it up so you can see the keyboard.

Underneath the f4, f8, and f12 keys there are indents (see the second image) to fit a spudger or plastic opening tool to pop the keyboard off.

Once you find an indent with your spudger, carefully move it so the top of the keyboard comes away from the rest of the computer, followed by the bottom of the keyboard.