Yes, I haven't been to engineering school, so in almost every company or open source community I've been part of, colleagues have been mentoring me.

The mentors I had were very passionate about their field and happy to share their knowledge.

The mentoring was not really about small details. More about seeing what technologies and concepts I was comfortable with, and telling me what things I should explore next. It was most of the time very opinionated, but this was OK, as I had more than one mentor.