What SEO tips or tricks do you wish you knew sooner?

[LuckoftheSpin]

Hi everyone,

So, I was thinking recently of how I could have gotten my website where it needed to be sooner, and it got me thinking of this question.

Are there any tricks or tips that you wish you knew sooner or when you first started SEO that you know now?

[chaumi]

I wish I knew earlier how valuable it is (before actually starting) to deeply think a chosen subject through and map out a structure that can present/explain it intuitively and in depth, in such a way that you don't have to adapt or change anything heavily later on.