From The Jargon File (version 4.4.7, 29 Dec 2003) :
source of all good bits
n.
A person from whom (or a place from which) useful information may be
obtained. If you need to know about a program, a guru might be the source
of all good bits. The title is often applied to a particularly competent
secretary.
From The Free On-line Dictionary of Computing (30 December 2018) :
source of all good bits
A person from whom (or a place from which)
useful information may be obtained. If you need to know about
a program, a guru might be the source of all good bits. The
title is often applied to a particularly competent secretary.
[{Jargon File]
(2001-01-27)