Even though Rav Nahman  said one should finish the entire writings of the Ari every year I have noticed a small book called Hasdei David from Algiers that sums up the Eitz Chaim of the Ari in a [cliff notes] shorter way but with most of the main details included. [That is printed in the regular editions of the Ari in the third volume of the Eitz Chaim along with the Nahar Shalom of the Reshash [Sar Shalom Sharabi.]