Spirituality is a way of life. It is not a religion, a "method", and cannot be found and sustained from any single book. It is the understanding that everything is connected, that if I hurt you, I hurt me, and that in order to love someone else, I must know that I'm worthy of love.
Spirituality can be taught but it cannot be bought. And that is just scratching the surface of the subject.
Indeed, it is scratching the surface. The knowing of unity is not enough to truly feel the unity. It really needs a very deep discussion!