Ah yeah so the first link is the manual for Construct 2. Because it's been around for quite awhile it often appears high on Google searches and the like. Quite a bit of the manual content is similar for C2, but for C3 you want the C3 manual which is on Construct.net
not Scirra.com
.
That second link is a guide made by a user for C2, I have no idea if it works or not. But things have changed a lot.
Unfortunately for any software product that has been around for long enough, and changed during that time, it's inevitable that you will end up with outdated tutorials around on the net. There's not much we can do about it.