The Badatz of Crown Heights has produced a Day-to Day Halacha Guide for Pesach 5781
Including:
Selling Chametz
Kashering
Immersing dishes
Shabbos Erev Pesach
Seder Prep
Laws of Yom Tov and Chol Hamoed
Moshiach Seudah
Sefirah FAQs
Day to Day Pesach Guide English
Day to Day Pesach Guide Hebrew
For the sale of Chametz at the Badatz offices, call 718 604 8000 or visit http://chcentral.org/mechira/ for selling online
Watch a Shiur & Q&A With Rabbi Braun about Shabbos Erev Pesach
https://www.youtube.com/watch?v=96rEkzbuLo4