I also can’t express office hours enough to others. Because I took advantage of it, I made so many healthy and helpful relationships with my professors, allowing me to network and take advantage of different programs and opportunities — especially as a first-generation college student. Additionally, thanks to office hours and forming lasting relationships, my professor was (recently) able to connect me with someone who is also going to the same graduate program as I am, thus eliciting more relationships! Of course, this is just a subjective experience of the many other advantages of office hours :D