The Coda documentation, which incidentally is not included with the Coda source, contains 9 manuals. The most useful of these is the Coda Administration and User Manual, though you should also read the Notes and Explanations about Coda Security.
The Administration and User Manual contains man pages, though they are (I think) in HTML or PostScript format rather than in troff source format. (Someone has put out a collection of plain man pages, but, the last time I looked, they were a different version from those in the Admin manual.)