[solomatov]

I would use Intellij. The most important features are:

* Find usages (Alt+F7)

* Navigate by hierarchy (Ctrl+U/Ctrl+Alt+B)

[Adamantcheese]

I would have to agree. Find usages along with figuring out where/what variables are or used for will get you a long way. You can also go from the entry point and follow execution order, to the extent that you can.

[in15minutes]

Is it akin to "open definition" on methods? Does it summarize the call graph for you or just jumps you the calls?