The Envision Slack has amazing access to mentorship opportunities for all underrepresented founders:

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HBS MBA 2020 Mentors for Underestimated Founders:

https://airtable.com/shrExQiXoOe5QT6YE/tblOEv71vP4XzPv0b/viwK5MwsZctp7Vvkb

Paying it Forward- Founders for Black Founders

Paying It Forward - Resources

Articles on what makes a great mentor from the TechStars founder:

1. http://davidcohen.wpengine.com/2011/08/28/the-mentor-manifesto/
2. http://davidcohen.wpengine.com/2007/10/31/tip-2-find-and-engage-great-mentors/