I just started a new job and have hopped into the first codebase I'll need to work with that I didn't write from scratch myself. I've just been pining for a way

I just started a new job and have hopped into the first codebase I'll need to work with that I didn't write from scratch myself. I've just been pining for a way to browse through this code as easily as documents in a web browser. Maybe that's the wrong paradigm, but man, there's got to be a better way to read code that lends itself to understanding what's going on. Even though my IDE can "find usages" and I can set breakpoints and step through things, the breakpoints get hit so fast that it's hard to internalize things before hitting "play" again. But stopping for too long breaks the real-time nature of the system. Which I guess is too many words which essentially mean, "I've recently felt this pain, and I agree."