Another vote for Stagnaro's book which I've worked with for over a year now. He says more than once throughout that you must learn to feel the one, mainly because so many measures are tied over and the one seemingly isn't there. It's there but you must learn to account for it though nothing may not be played on it. To quote him, this in reference to basic tumbao, " Even thought the "1" is not being played, you must be able to feel where it is in every bar."
