Rabbi Itamar Shwartz author of Bilvavi Mishkan Evneh and the Getting to Know Your Self/Soul/Emotions/Thoughts series has some great articles for Soul Preparation for Pesach.

Pesach Talks

Pesach – Freedom From The Evil Inclination

Pesach – Internalizing Your Knowledge

Pesach – Time of Our Freedom

Pesach – Redeeming Your Soul

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Rabbi Akiva Tatz has some amazing Pesach Shiurim here.

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Torah Anytime has hundreds of shiurim on Pesach.

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YU Torah has hundreds of shiurim on Pesach.

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Aish has many articles on Pesach here.

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The Haggadah relates that:

In every generation a person is obligated to regard himself as if he had come out of Mitzrayim, as it is says: “You shall tell your child on that day, it is because of this that Hashem did for me when I left Mitzrayim.”

Rabbi Moshe Gordon explores some of the classical approaches to understanding and fulfilling this Mitzvah in this mp3 on Leaving Mitzraim.

And here is an amazing series of Shiurim by Rabbi Gordon on the Seder and the Haggadah which covers the major Rishonim, Achronim and Poskim on the mitzvos of Pesach night and the Hagaddah.

Seder

Kadesh and Arba Kosos

Urchatz Karpas Yachatz

Hallel Rachtza Matza Heseiba

Maror Korech Shulchan Orech

Afikomen Barech End of Hallel Nirtza after Seder

Haggadagh

Intro to Sippur Yetzias Mitzrayim

HaLachma Anya Akiras HaShulchan Intro to Ma Nishtana

Ma Nishtana

Avadim Hayeinu Arami Oved Avi

Arami Oved Avi 2

Makos End of Magid

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