>> Apart from the "12 month millionaire",very few courses are available on this topic.
On Direct mail??

No shortage of it. Yanik Silver had one. Alex Mandossian. Ted Nicholas. Dan Kennedy. T.J. Rohleder.

Direct mail is, of course, older than internet marketing.

There is a LOT of content on its tactics and its still a very active and lucractive model today.

Just need to look outside of the IM circles. Subscribe to mags like Target Marketing Mag, check out The Total Package by Clayton Makepeace or just start off with some of the direct mail bestsellers on Amazon.

Also dive into some of the direct response / direct mail forums.