Any good guides to PFtrack?

Hello! This is my very first post here, so I'm not sure if this has been discussed earlier, sorry in that case!

I'm working on a school project where I need to matchmove a person turning their head around in a shot. I'm using PFtrack for this, but since it's not a program we get to learn about in school I feel a bit lost.

I can't seem to find any good tutorials for PFtrack (I'm using 2013 which has a different interface than 2011, so I prefer tutorials with that version since I get super confused otherwise).

I'm trying to use geometry tracking. I've set up my camera in Maya, made sure all the parameters match the camera I shot the film with and exported it to PFtrack. However, when I upload the .obj of the face-mesh that I matched to the persons face, I get a weird disortion, as if the focus distance was all weird. I also tried to create the camera from scratch in PFtrack, but I get the same result

I'm really new with matchmoving, so I'm sure I'm doing something wrong. Does anyone know what it could be, or perhaps know of any good tutorials for a newbie :)?

Thanks!