Even though wikipedia is not a dictionary, both of these topics should be most interesting to wikipedians, especially since the art or craft of writing an encyclopedia does not yet have an established name of its own.
There seems to be a discussion of the definition of lexicology. Some use that word as a synonym for theoretical lexicography, others use it for a branch of linguistics pertaining to the treasure of words in a particular language.
Most English lexicographers would find interest in Samuel Johnson's Dictionary of the English Language (1755). He famously defined a lexicographer as "A writer of dictionaries; a harmless drudge that busies himself in tracing the original, and detailing the signification of words".
Introductory books to lexicography: