With a little searching, I'm sure the actual material available stretches into hundreds of hours.I'm sure it's far more than that. Especially if "a little searching" includes bittorrent trackers. Not that I advocate this sort of thing, but there's one tracker I know of, that specializes in business related topics, with a healthy dose of sales and marketing material. There is so much material (books, videos, reports, articles, podcasts, etc.) to watch, listen to, read, etc. that you could probably spend tens of thousands of hours on it.
, is: what is the best available material out there, where I can learn 80% of marketing in 20% of the material?
OK, I'm not marketing guru, just another "developer trying to take up marketing." But based on a lot of reading, watching, asking questions, etc., I get the sense that material from Chet Holmes, Dan Kennedy and Jay Abraham is usually regarded as pretty good. I'm watching some Chet Holmes videos now, and finding a ton of value in them, FWIW. YMMV, of course.
Also, the works of Jack Trout, Al Ries, Steve Rifkin, et al, are usually regarded as pretty important. Trout and crew basically created positioning theory.
And then there's a whole separate world of material for people who are interested in the spammy(er), get rich quick, "Internet Marketing" stuff. I haven't studied any of his marketing materials, but Eben Pagan seems to be one of the more popular guys in that world. Whether or not his material would be of use to the typical HN reader is left as an exercise for the reader. Or, if somebody here is familiar with his work and could chime in, I'd be really curious to hear your take.