Last week I was coaching a client who’s interviewing at top companies. When I asked what she was using to prep, she pulled out Decode and Conquer (2013) and The Product Manager Interview (2017).

Those books were great for their time, but the 2026 hiring environment is completely different. Meta’s influence and rising expectations across the industry have changed what interviewers look for.

If you’re preparing now, the only version that reflects today’s standards is the updated Decode and Conquer 5th edition.