I have worked my way through about seven computer based training courses, and so far the best by a mile is Chris Lori's All Star FX pro trader course.
He does not sell a system but teaches you from the ground up.
My next suggestions in order would be Ed Ponsi for good solid background and Steve Neilson for candlestick. I want to get Peter Bains couse but have not found a copy yet.
PS. All of these are available on torrent sites if thats your thing !