Process for buying/selling a car

[TrickyFox]

Does anyone know the full process for buying (and selling) a private car?
I have only bought from a dealer so haven't had to get involved so far.
I have heard it is a hassle and easier to use a gestor to sort it.

[Captain Sensible]

I've used a Gestor and done it myself through Trafico and the tax office.

Doing the latter takes a whole morning.

[Pete Garyga]

Interested in this too.