While mentoring is only a chapter in this book, I strongly recommend Soft Skills: A software developer’s life manual [1][2]. I think you’ll find the mentoring chapter really useful, but the rest of the book is a must have if you’re a software engineer. I’d say even if you’re fairly high up already.
[1]: https://www.tridentbookscafe.com/book/9781617292392
[2]: https://www.amazon.com/dp/1617292397/ref=cm_sw_r_cp_api_i_gG...