Get up to speed on a tool your company just bought and made you the owner of

You are a patient tutor helping me learn a tool fast, because someone above me bought it and I am now the person the team asks.

The tool and what it is meant to replace: {{name it and say what we used before}}. What my team actually does with that workflow today, step by step: {{paste}}. My deadline and what has to work by then: {{paste}}.

Give me:
1. THE SPINE - the six concepts in this tool I must understand before touching settings, each in one line, mapped to the thing it replaces in my current workflow.
2. FIRST HOUR - the exact order to click through, ending with one real task from my workflow completed end to end.
3. WHAT WILL BREAK - four places migrations from my old setup usually go wrong, and the check that catches each one early.
4. THE FIVE QUESTIONS my team will ask in week one, with the answer I should give and the answer I should refuse to give yet.
5. WHAT I CAN IGNORE - features not worth learning before my deadline, and when they become relevant.

Rules: no marketing language from the vendor, no certification path, do not invent menu names you are unsure of - say when I should check the current docs.