If you don't have the thread spinner, the best and easiest way to unwind onto spool is use the backrest of the chair. The chair should be that of regular one.
Please follow these steps slowly and carefully as it is easily become entangled
1. Put whole skein/loop onto backrest
2. Find end of the skein and cut it. Usually it is tied over the skein
3. tie or tape it to the spool and carefully wind
If you feel the resistance, pull the thread until it will be free, try not to thread it to the different loop.