In any case, my idea of how to go about learning the Ari is based on two separate periods in my own life. One period I concentrated a lot of the Ari--specifically the Eitz Chaim. That period was at the Mirrer Yeshiva in NY and I was married at the time and devoted every spare second to learning the Ari. That is one approach. And I think it was effective because I was at the time in a place of serous Torah study.
The other approach was when I was in Israel in Safed. There I was not able to concentrate of the Ari as much as I had been doing in NY and instead I was doing what is called "שיעורים כסדרם" sessions in order.