Startups, I want to get business mentoring, but where can I find a startup mentor?

I want to receive startup and business mentoring, where can I meet a startup mentor?

I am an office worker who wants to start a business and a startup.

Currently, I have many ideas but it's hard to concretize them,

I want to receive proper mentoring about business and startups, and start moving forward slowly.

I think my feeling of being overwhelmed and frustrated will improve if I receive mentoring.

Are there any famous business mentors or startup mentors?

Or is there a community where I can meet such mentors?

https://m.blog.naver.com/s-valueup