Here are some tutorial videos of example problems from selected sections:
Polynomial investigation: https://www.youtube.com/watch?v=DvMvFNy46Hw
Complex numbers: https://www.youtube.com/watch?v=oqBa2D4ykMs
Quadratic functions part 1: https://www.youtube.com/watch?v=yR_CRFEI_YY
Quadratic functions part 2: https://www.youtube.com/watch?v=FptdQPh-vL0
Quadratic functions part 3: https://www.youtube.com/watch?v=kw-X6pAEgXQ
Quadratic applications: https://www.youtube.com/watch?v=YFrV6UGtmnA
Quadratic applications part 2: https://www.youtube.com/watch?v=DQqCA7Rfqyc
Graphing polynomials part 1: https://www.youtube.com/watch?v=yoPl8nj1PB0
Graphing polynomials part 2: https://www.youtube.com/watch?v=JDKJUhi1eaQ
Graphing polynomials part 3: https://www.youtube.com/watch?v=peQVY3f0azw
Graphing polynomials part 4: https://www.youtube.com/watch?v=J4Ums4Kg2Yw
Long division and synthetic division part 1: https://www.youtube.com/watch?v=eu4o0KyP3hk
Long division and synthetic division part 2-remainder theorem: https://www.youtube.com/watch?v=OMUKJiRs3f0
Long division and synthetic division part 3-factor theorem: https://www.youtube.com/watch?v=nE-g1hyUWlk
Zeros of polynomials part 1: https://www.youtube.com/watch?v=qi-0RpkFJWY
Zeros of polynomials part 2: https://www.youtube.com/watch?v=KXEvgDmsCLk
Zeros of polynomials part 3: https://www.youtube.com/watch?v=SeQ3IIiuP0Q
Zeros of polynomials part 4: https://www.youtube.com/watch?v=rdKm5aaLrsk
Zeros of polynomials part 5: https://www.youtube.com/watch?v=6A6aZAnXLaU
Rational functions part 1: https://www.youtube.com/watch?v=SzaAi9iUaf0
Rational functions part 2: https://www.youtube.com/watch?v=9jI6us77aeY
Rational functions part 3: https://www.youtube.com/watch?v=JK9BJNo51rU
Rational functions part 4: https://www.youtube.com/watch?v=yoeH4IE-wzo