Yesterday, I started a list of my mentors in Obsidian.
This list is split in two, Long-term mentors (those who have much to glean from) and temporary mentors (those who are teaching me a specific skill or approach).
I have pages for each mentor in Obsidian so I can see the beautiful knowledge graph that emerges as I learn more from each person and create additional notes.
With very few exceptions, I have no actual relationship with these mentors. Instead, they mentor me through their blogs, books, podcasts, and other content. My approach has been inspired by how Ryan Holiday, Derek Sivers and Patrick Rhone approach unoffical mentorship.
At the same time, I do have an offical mentor here in Krakow. Going for coffee and lunch with him is a fantastic opportunity to learn.