The Rebbe's guidance on Purim and the month of Adar:
Joy beyond reason. The joy of Purim reaches beyond intellect, to serving G-d with self-sacrifice in every part of life (IK 1454). In Adar joy should permeate Torah study and mitzvos (IK 7592), and in a leap year the joy is doubled (IK 10721). Purim's spiritual energy begins from the eleventh of Adar and lasts beyond its days (IK 8782, 8608), and its blessings — light, joy, gladness and honor — should be felt all year (IK 9869, 10730). Adar is a time of success for the Jewish people (IK 8363, 7223).
The mitzvos. Every detail of Purim's mitzvos reflects unity among Jews (IK 140, 216). Mishloach manos expresses Jewish unity through real action and love for one's fellow all year (IK 10737, 10742), and matanos la'evyonim and tzedakah on Purim carry great power (IK 8605, 6766); as on Purim, give to whoever asks (IK 7583). Every child should fulfill Purim's mitzvos personally, not rely on others (IK 7598). When Purim falls on Friday, the meal must be held by day (IK 2494). On Megillah customs and blessings, see IK 4597; the Megillah cannot be heard over a telephone (IK 8920).
Farbrengen and outreach. Hold joyful farbrengens on Purim, where even those distant can be transformed (IK 954, 4154, 7877, 9107, 10723). Use Purim's joy to bring others to mitzvos; Purim campaigns inspire even distant Jews (IK 10110, 7608). Plan Purim activities thoughtfully (IK 7212).
Mordechai and Esther. Mordechai's legacy is ensuring every child learns Torah (IK 6120, 8008), and Jewish continuity depends on steadfast devotion to Torah even under pressure (IK 9462, 10094). Queen Esther's self-sacrifice is a model for Jewish women's leadership (IK 6099, 10095). Purim marks a voluntary acceptance of the Torah beyond that of Sinai (IK 141).
See also: Tzedakah – Giving every day and at special times; Jewish outreach – Mitzvah campaigns.