(First time posting, let me know if this isn't right. All things in this post except this are relevant, so don't edit.)
Recently my buddy George texted me this:
WQ RAR I KE Q V UKE 0D3 WQ U2 CD H D3 KE 76S 84 CN8 :)
I asked him what he meant by that. He said to go post it on Puzzling.SE. So here we are.
I then asked how to write a good challenge if I don't know what it's even about.
He then sent me this:
The key is keep it clear and let them know what you need".
That message sounds strange and vague.
Clearly he's on to something, but what?