Module development and code questions

I've already tried to resurrect the module for 4.7. I have detailed my efforts to convert the module to the new forms API here:

http://drupal.org/node/19061

However, there are problems and I'm no coder. I'm guessing, however, that the fixes for this somewhat simple module would be a walk in the park for someone. I can create the patch, if someone wants to post the changes to the code. Thanks again for any help on this one...

Is there a way to allow more than 1 account with one email address?
I saw in node 15578 a suggestion for how to possibly hack this with 4.6. Now that 4.7 is out, I thought I'd raise the question and see if it's easier in 4.7 (or even has a setting)

I am reading the Drupal api docs. I'm looking under functions. At the end there are a lot of functions that start with an underscore. Some of them (all?) seem to be something called "helper functions." I've looked in my php books, searched drupal.org and on Google for "helper functions" mixed with "underscore" and "php." Came up with no answers. What's special about the underscore and functions that start with it? What does the underscore mean?

I would like to create a page that displays a list of files for users to download, print, etc. It's a basic list, but I'm trying to make this really, really simple for the content admin who could use simple forms much easier than having to type in the html for the page.

I just need a simple list in the content section of the page

Example File
Example File
Example File

So i got the gallery 2 up and running in my drupal directory...I also installed the g2 module that allows me to display random images in a block. My problem is that the block links to a nonexistant URL. Any suggestions.

http://www.gilsmethod.com

Hi there!

I have a node module for allowing anonymous users to publish a certain kind of content. I´d like only administrators to be able to categorize that content.

¿Is there a way to hide the node´s form taxonomies to anonymous users and allow the administrator or other roles to categorise that node? ¿Any other solution?

Hope I explain myself enought
Thanks
rlbravo