Total Novice needs help with Wake on Wan

Hi all,

As my username implies, i'm new to wifi networking but was interested in being able to turn on my pc from anywhere over the internet.

Google searches did not yield instructions on how to do it so I figured I'd ask here and see if anyone had detailed instructions.

I have an ASUS RT-AC68U router with my computer hardwired to it. Beyond that, i'm not sure what to do next. Any help or a procedure would be greatly appreciated!