Product Manager Case Prep: 2-Week Plan

Product manager loops test four things: product sense, execution, estimation, and behavioral. Two weeks is enough time to hit all four if you resist the urge to cram frameworks and instead practice out loud every single day.

Week one: build the vocabulary

1. Day 1: pick three products you use daily and write a one-page teardown of each.
2. Day 2: learn the CIRCLES and AARM frameworks. Do not memorize. Understand why each step exists.
3. Day 3: attempt one 'design a product for X' prompt out loud, recorded.
4. Day 4: estimation. Practice five Fermi problems in 15 minutes each.
5. Day 5: metrics. For each teardown pick the one number the PM would defend at review.
6. Weekend: run one full mock with a friend or an AI mock interview.

Week two: raise the ceiling

1. Day 8: root-cause a metric drop prompt. Practice the funnel narrowing move out loud.
2. Day 9: strategy. Pick a real company and prep the '3-year vision' answer.
3. Day 10: behavioral. Draft your top six stories with numbers.
4. Day 11: trade-off prompt. Practice the 'A vs. B, here is why' rhythm.
5. Day 12: full loop rehearsal end to end.
6. Day 13: rest. Do not cram the day before.
7. Day 14: interview day. Warm up with one easy prompt an hour before.

What to cut

Reading more case books. Watching more YouTube. Both feel productive and both build zero muscle memory. Reps out loud are the only thing that moves the score on interview day.