John Doerr who has documented and trained companies on OKR and his teacher has been OKR creator Andrew Grove
If you want to move into a leadership position or become an entrepreneur, definitely read Measure What Matters. It teaches the OKR framework—how to set and track meaningful goals for real results. I discovered this book while taking an “OKR: Measure What Matters” course from the original author, and it changed how I look at success and accountability.