Points to consider for career coaching?

I noticed that Taro has hosted multiple career coaches/mentors and I'm interested in doing career coaching on top of Taro. Specifically to help accelerate promo timeline. The reason being that the company I'm joining has fast career growth opportunities (junior -> senior promo is ~2-3 years) but also high expectations and fast ramp-up times (first project lasts 2-3 months, 2-3 day onboarding period, etc.). The org is pretty flat - junior, senior and manager are the only "levels", meaning the jump in behavior changes would be huge. I think having personalized guidance would really help. So I wanted to ask a few questions:

1. What benefits can 1:1 mentorship bring to me vs general resources like Taro?
2. What are some points for consideration if I want to get a mentor or not?
3. How can I spot a good mentor vs a bad one? How can I quickly tell that they're a good fit for me?
4. Let's say I have an intro call with mentors. What are some questions I should ask to determine fit?