At one point of time I was looking for clarity about the difference between the mind and brain. Then Shri. Vediappan, who belongs to Brahma Kumaris organization in Hosur took me to Mount Abu in Rajasthan and helped me understand these by giving many explanations for a number of days. He has also been helpful in clarifying many things in our anatomic treatment.
So, for understanding mind, brain and inner mind, you can go to the nearest Brahma Kumaris centre and learn.