I just started playing Nine Men's Morris. I have tried playing with both the computer and on online multiplayer settings and have been doing abysmally. I tried finding some good resource on the net that could give me some in depth study of useful strategies for this board game but I found very basic guides that were basically just a rehash of the rules. Could somebody help me in my dilemma, I want to start winning at least a few of the games.
There's some information available in German. The game's called "Mühle" (= mill) in German,
and there exists at least one book on this subject.
The book can be found online here: http://www.hubbie.de/
It should be possible to understand a lot of the strategies even without knowledge of German, but with "Google translate", or dict.leo.org you should be able to make sense of most of the text.
There's even an organization which organizes (European) championchips, see
I realize you are searching for a human strategy, but it might be useful to look at this:
Problem was solved by Ralph Gasser for an AI player.
In the early '90s, at least one person believed that the strategy you are seeking was not possible to describe.
I've not found anything to contradict him, so unless someone else has more recent experience to share, you may be out of luck.