There are two interesting sites you might want to visit.
Michael James is the translator/editor of Sadhu Om's Path of Sri Ramana Part I and II. I have read Part I and find it in complete agreement with Robert's more advanced teachings on how to practice. Michael has started a brand new site and has a free PDF version of a book he wrote online as well as two other Ramana-related books. I recommend this site.
Charlie Hayes is a man of boundless energy. The illustrated PDF version of the third "edition" of Nisargadatta booklet should be available there. Or, I can send it to you by email.