Most Asus laptop keyboards are easily removed by pushing in the retainer clips near the top of the keyboard where it meets the bezel. Use a small spudger or tool to press the clips in then lift that section out, and continue on until all clips have been removed. After that, it's even more straightforward, remove the flex from the ZIF connector and reverse those steps.
Apologies that I do not have any instructions to link you to but it is really a quick and simple repair. If you're having trouble, I'm sure you can find a video on youtube.