Learn to manage people in your first 90 days
Ninety days — about 35 hours of reading and listening, plus the weekly meetings you'll be holding anyway — takes a new manager from improvising to running a steady rhythm of one-on-ones, feedback and delegation. You won't be a great manager in three months. You'll stop being an accidental one.
90 days · ~35 hours · weekly one-on-ones with every report and a habit of regular feedback
1.The Making of a Manager — Julie Zhuo
Zhuo became a manager at Facebook at twenty-five and rose to VP of product design, and this is the book she wished she'd had. It's written for exactly your situation: you were good at the work, now you're responsible for people who do it. She covers the shift from doing to multiplying, running your first one-on-ones, giving feedback without being a jerk, managing former peers, and hiring. Warm, practical and fast — read it in your first week.
~$18 paperback
The Making of a Manager →2.Manager Tools — the Trinity casts
Mark Horstman and Mike Auzenne have run this podcast since 2005, and their prescriptions are blunt and specific: a 30-minute one-on-one with every direct report, every week, never cancelled; the first ten minutes are theirs. Start with "The Management Trinity — One on Ones," then the feedback and delegation casts in the Basics feed. Roll out one-on-ones in week two, feedback around week six. They tell you exactly what to say; say it, then adjust.
Free; optional paid premium content and conferences
Manager Tools: One on Ones →3.High Output Management — Andrew Grove
Once the weekly rhythm is running, read the book that explains why it works. Grove ran Intel, and his central idea — a manager's output is the output of their team and the neighbouring teams they influence — reframes every meeting, decision and interruption in your week. The chapters on managerial leverage, one-on-ones and task-relevant maturity are essential. It was written in 1983 and it reads like it was written for a startup last year.
~$18 paperback
High Output Management →If this doesn't fit you
If you manage software engineers, replace step 1 with Camille Fournier's The Manager's Path. It goes from tech lead to CTO, rung by rung, and handles the specific tensions of engineering teams — staying technical, managing managers, on-call and architecture debates — better than any general book. Keep Manager Tools and Grove.
Why this path
Most new managers are promoted for being good at the work and given no training for the new job, so they keep doing the old one and manage in the gaps. Zhuo resets your idea of what the job is. Manager Tools turns it into weekly behavior you can start on Monday. Grove gives you the operating theory once you have enough experience to recognize it. One-on-ones are the foundation: managers who hold them every week find out about problems while they're still small.