May one first apply oil to one's foot and then insert it into a new shoe on Shabbat?

Which specific prayers require advance organization: does the requirement apply only to Mussaf, or also to Yaaleh v'Yavo insertions and other occasional additions?

Answering Amen During Prayer

Does the four-amot waiting requirement apply when one intends to pray a second prayer at the same spot rather than returning to one's original place?

Waiting Between Prayer and Eating

Does the requirement to juxtapose Redemption to Prayer apply on Shabbat?

Shaliach Tzibbur — Prayer Leader

When one bows during Zokhreinu or Mi Kamokha on Rosh Hashanah/Yom Kippur (insertions in the first and second blessings of the Amidah), must one straighten up before the blessing's conclusion?

Mashiv HaRuach — Wind and Rain

Must one first say a complete sentence of the blessing's standard text before inserting a personal addition?

Errors in Shabbat Amidah

Does the prohibition against delaying one's meal past the sixth hour apply even if one tasted something in the morning?

Hand Washing and Water Requirements