Laura

@Andrzej "Cee", as in the letter "C" for cookie, is the first (letter) in (the word) "command".

@Andrzej An aide is a person. An aid is a thing. So a teaching aid would be something like a poster, a material, an example, but a teaching aide would be a position. Some indoor dogs have crates, which are similar to a doghouse but for inside the house. Some crates are cagelike and have hatches that owners can lock to double as transport. Duck Duck Goose is a children's game in which one person is "it" and taps the other players, who are seated on the ground in a circle, and calling "duck" until they choose one to be "goose", runs around the circle to avoid being tagged by the "goose", and steals their spot in the circle. Lastly, while I understand your frustration with localized clues as a foreigner, I hope you'll find such incidences as opportunities to expand your American trivia knowledge. As a Asian Californian, I can feel rather annoyed by the occasional Yiddish clue.

@Nate Mickey Mouse is playing the titular role for "The Sorceror's Apprentice". Yen Sid is said SORCEROR.

@Matt In the Constructor's Notes where the puzzles are mentioned, they are also hyperlinked!