The way I was taught was to:
- Centre the controls (some A/C flight manuals say to push forward or use aileron, check for your particular type)
- Power to idle
- Apply opposite rudder until the autorotation stops
Once the rotation has stopped, you have recovered from the spin, but are now most likely in a nose high/nose low unusual attitude, so for a nose low attitude it would mean to leave the power idle, unload the G, roll wings level, then pitch up. Passing a safe speed e.g. Vx, you would then apply full power to continue the climb and gain back altitude.
If you were to recover in a "nose high" attitude, you would then need full power, unload G, wings level, pitch down.