[O] First steps in customizing org-mode

[Giulio Petrucci]

Hello there,

this is my first post here so let me introduce myself: my name is
Giulio, or "petrux" for friends. I am italian. I am a PhD candidate at
University of Trento and I've been working for many years as a
developer before "going back to school".
I use Emacs for almost everything. I love org-mode and I would like to
start using it at an higher level.
So, I would like to heavily customize it.
I am experiencing some problems that come from MOSTLY my un-expertise
in Lisp/EmacsLisp -- which I am actually trying to recover.

Another problem that I am eperiencing is that it is very hard for me
to find documentation about the org-mode function and variables.
For this specific issue, is there any resource that shows you *what*
you can do *and how* to do it?

Thanks,
Giulio

P.S. here is an example of what I mean. I have learned from some
examples that I can customize my agenda views acting on the
org-agenda-custom-commands variable. If I google for that variable's
name, I end up in some pages not telling me that much about that
variable, how to customize it  and so on. So what I need is an
exaustive list of "In org-mode, you can do this and this and this..."
for beginner.

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