Crossword puzzle clue "hint first part"

Hint (and a hint to this puzzle's theme)

"Mrs. Frisby and the Rats of ___" (classic 1971 children's book based on experiments at the National Insistute of Mental Health, hint hint)

Something your poetry teacher might assign you to write about a particularly inspirational poetry teacher you've had *hint* *hint

Hint - first part

Like some baseball pitches ... and a hint to locating the second part of four three-part puzzle answers

"Deck the Halls," for one ... or a hint to the first two letters of each word in the starred answers

Sitcom whose first episode was titled "Movin' In" (and a hint to this puzzle's theme)

Repeated words in a drill sergeant's marching order, and a hint to how the first and second word, in turn, of each starred answer would be touch-typed