I've encountered a Ghost, in person, but even in meditation I've never met a Guide/Entity. Information just seems available as soon as it's needed, there is no entity providing it... Does that make sense? Even in OOB/Lucid Dreams, there is no apparent Guide/Helper/Teacher/Guardian entities. Such an entity would have certainly made it less horrifying when I started all of this. I guess it's possible they're just not rendered because I've always tended toward skepticism with regard to there being anything but "me".