where are the poles of rotation of the tectonic plates located? Euler's "fixed point" theorem ... can be stated as:


  The most general displacement of a rigid body over the surface of a
  sphere can be regarded as a rotation about a suitable axis which
  passes through the centre of that sphere.


Thus all plate motions can be described by a rotation axis, which passes through the centre of the Earth and cuts the surface at two points, called the poles of rotation. The relative motion of two plates then needs a pole of rotation and an angular velocity to be defined.

So where are those poles located?  Is there any map or resource indicating where those are 'poles' are?
Up to now, we constrained the (relative) plate movements mostly with seismic slip measurments. 

Since 10-20 years, with the diffusion of GPS measurments, it has been possible to have a more granular distribution of movements and a more precise estimation of the rotation pole for a given plate.

Roughly speaking, then, you should look for the work of authors like these:
https://meetingorganizer.copernicus.org/EGU2017/EGU2017-14816-1.pdf (just a random "scientific" google result for the search)

The end product (an accurate determination of rotation poles) should help in estabilishing the seismic hazard, by observing gaps and differential displacements, possibly representing loading of the fault, in a very primitive Reid (1910) way of thinking:


https://earthquake.usgs.gov/earthquakes/events/1906calif/18april/images/ElasticRebound.gif

I have no right on the image, it comes from the USGS site.