I've been reporting on Rose Rosetree's book Aura Reading Through All Your Senses. One of the most important things I think she does in this book is to dispel the notion that reading an aura always must be through "second sight." Nope. You can also feel an aura (empathic gifts), hear an aura (that would be something, wouldn't it?), taste an aura, or even smell an aura. Personally, I feel an aura first and may get a little glimpse of parts of it visually (but that ability varies for me), but tasting, smelling, or hearing? I haven't developed those gifts yet.
Another important thing she does is to give you specific techniques, easy to practice at home, to develop those various gifts. Better yet, she gives you the golden key. What is the golden key, you ask? It is the ability to develop your internal dictionary about the meaning of all that you sense. No more feeling like you have to rely on someone else's dictates on what certain aura colors mean. I really like that empowerment. If you're interested, this book may be for you!