The Habdala recited upon the conclusion of Yom Kippur consists of three Berachot – "Boreh Peri Ha’gefen" over a cup of wine, "Boreh Me’oreh Ha’esh" over a flame, and the usual Beracha of "Ha’mabdil Ben Kodesh Le’hol…" The flame over which one recites Habdala must have been kindled before Yom Kippur. Everyone who will be reciting Habdala should therefore ensure to light a 25-hour Yahrtzeit candle before Yom Kippur so that they have a flame on which to recite "Boreh Me’oreh Ha’esh" in Habdala after Yom Kippur.
Rav Haim Palachi (Turkey, 1788-1869) writes that one must not rush through the Arbit prayer service on Mosa’eh Yom Kippur. This is the first prayer recited after the Yamim Nora’im (High Holidays), and the quality of this Tefila serves as an indication of the quality of our Yom Kippur observance, the extent to which we have truly grown in our commitment to Hashem. It should therefore be recited slowly and with concentration.
Those who build their own Sukka for Sukkot should preferably begin the building immediately after Yom Kippur, even before they break their fast. Obviously, one does not have to build the entire Sukka before eating; rather, one should make some initial preparations for the building before he sits down to break his fast after Yom Kippur. Rav Haim Palachi suggested an allusion to this Halacha from a pair of verses in the Book of Bereshit (33:16-17): "Esav returned on that day along the way to Seir, while Yaakob journeyed to Sukkot…" People who "return…along the way" after Yom Kippur, immediately resuming their normal physical activities, follow the example of Esav. Those who follow the example of Yaakob, by contrast, "journey to Sukkot" – proceed right away after Yom Kippur to begin preparing the Sukka. A famous verse in Tehillim (84:8) states, "Yelechu Me’hayil El Hayil" ("They shall go from strength to strength"). One should proceed from one great accomplishment immediately to the next, and it is therefore proper after Yom Kippur to make some preparations for the Sukka even before breaking the fast.
During the period between Rosh Hashanah and Yom Kippur, one should spend time selecting his Arba Minim in preparation for the celebration of Sukkot.
Summary: One must not rush through the recitation of Arbit on Mosa’eh Yom Kippur. During Habdala on Mosa’eh Yom Kippur, one recites the Beracha of "Boreh Me’oreh He’esh" over a flame that had been kindled before Yom Kippur. One must therefore ensure to light a Yahrtzeit candle before Yom Kippur for this purpose. It is proper to make at least some preliminary preparations for the building of the Sukka immediately after Yom Kippur, even before breaking the fast.