RTFM

Reading the owner’s manual has suddenly become respectable again:

There is an ancient and hallowed tradition: if you get a reply
that reads “RTFM”, the person who sent it thinks you
should have Read The F***ing Manual. He or she is almost certainly right.
Go read it. [my ***]

But the best one-liner comes from this article by Jay Leno:

Instructables can be confusable.

Tips from Geek Press and the Instapundit.