Looking up tags, methods, objects, etc.

Hi Folks,

I'm debugging someone else's code here, and while I'm fairly well schooled
in programming fundamentals (control structures, theory, etc) I don't have
a lot of in depth experience with web technologies. Thus I'm constantly coming
across some funky function, tag, object/class or method and I need a way
to look it up and figure out what it does and how it's used.

Can anyone suggest a good site where I can look up ASP objects & properties,
HTML tags, Javascript methods, objects, etc.? I just want a simple explanation
of whatever I'm looking up, its uses, parameters, attributes, whatever is
applicable along with some good examples.

Most of the sites I try are alot more complicated than one might think (difficult
to navigate, etc).

Thanks very much,

Nat