Sorry to possibly offend LecturePT,
but I believe what you are doing is highly unethical.
You leave the impression that Physical Therapy is something one can learn from books or lectures, when we all know that even the most basic 3 year degree includes weeks and weeks of supervised practice.

Sonics, if your relatives have health problems, please get them to see a professional Physiotherapist or whatever the process is in your country. They will provide them with an intervention plan that adequately addresses their problems. They will also show you which exercises you can do with your relatives. Your brother could join a sports club or gym, even if it is just for a short time - they have Personal Trainers and/ or Physios who can educate you and your brother in regards to training and injury prevention.

If exercises and massage are done incorrectly, they can do more harm than good, so please be vry careful with anythong you learn on the net.

Best of luck,
Fyzzio