Self-Inquiry

Title
What is the Atma Vichara method or the "Who am I?" inquiry?
There are proponents of advaita who place little emphasis on meditation. How are Self-inquiry and meditation linked?
Can you please explain what Shri Ramana Maharishi meant by the location of the Self is at the right side of the heart and one should focus there?
Can you speak more about trying to watch where the “I” feeling is coming from? Where does one watch? Is it the spot within that is not defined exactly by location?
It is sometimes said that we, as the Immortal Soul, are beyond both the seer and the seen. At other times I have heard that we are the witness. These two statements seem conflicting, which is true?
Could you explain the difference between consciousness and awareness. Can the Truth be said to be Supreme Consciousness or Supreme Awareness?
Can you please explain the following words from the Katha Upanishad? "The Purusha, no larger than a thumb, the inner Self always dwells in the heart of man."
How far can we get toward the truth logically? If it is All-Pervading why can't we see It?