Today I'm reading how I can build a Moodle module in a Wiki Page of Moodle. Along all day, I will edit this post with some comments and conclusions about what I have read.
Edit at 12:13
This morning I have been preparing the environment for begin to develop Moodle as soon as possible.
My favorite IDE for programming is eclipse (well, I now it seems a Switzerland knife xD, but it's very useful and runs perfectly on my Arch and it is easily pluggable), so I was looking about how I can prepare a web environment in eclipse.
Looking for on the Moodle Wiki I have found a concrete page explains perfectly what I have to do to work with eclipse for developing Moodle: Wiki page on Moodle site for Eclipse.
Now, following the previous instructions, my Eclipse is now ready to use (it was a quite hard but finally I have got it).
Also, for this afternoon, I have downloaded a template for programming modules for Moodle. This is the link I have followed to read about module development and download the module template: Link.