Here is a great article about the independent seat from a historical perspective. The independent seat takes months and years to develop and is fundamental to all good riding. Hopefully you can have fun riding without your stirrups and without your reins and being on the lunge line as it evolves. Also, as an instructor who frequently requires one-handed riding, I loved to see that it was historically a part of Grand Prix dressage tests! Yeah 🙂
http://asci.uvm.edu/equine/law/articles/correct.htm