In a nutshell, nonduality means "not two" or "nonseparation." It is the sense that all things are one interconnected whole. This realization of oneness is also known as presence, awareness, consciousness, liberation, the infinite, the absolute or simply "This." But these are just concepts pointing to what is beyond words.
Although it is at the core of major traditions, nonduality is not a religion, nor is it a "New Age" philosophy. It is about investigating our true nature.
Why learn about nonduality?
1. For inner peace.
2. To explore the nature of reality.
3. To ease suffering caused by the illusion of separation.
4. To end the bondage of "seeking" when one doesn't feel complete.
Rather than getting or becoming anything, it's about knowing who or what you already are.