How much chametz to turn back for and then can one work on erev pesach?

What to do when erev pesach is shabbat and what to do if one is on a journey on erev pesach but forgot to get rid of some chametz

How to manage more people making matza than oven space to bake it, and when does dough become chametz?

Dough stuck to a trough and separating challah from tamei dough on yom tov of pesach

More chametz issues and mixtures of chametz

What may be used for maror, and permitted actions with grains

Eating chametz terumah either inadvertently or on purpose, and which grains are fit to use for matza

Chametz that was in the possession of a Jew over Pesach or used as collateral

Can we make Chametz Terumah tamei? and how can we discard of chametz

Rabbi Yehuda brings support for his schedule for erev pesach, before a disagreement between two sages regarding the permissibility of making something more tamei