Module development and code questions

I'm trying to develop a tool that will query recent forum posts for specified keywords... and depending on the keyword - will email a specified recipient about the post.

Basically I just need a simple interface to enter a list of keywords and an email address that will receive updates when those keywords are used. I will need the ability to add multiple email addresses (one for each group of keywords) and would like to email a simple message saying something like:

"Your keyword * was used recently on the following page *"

I was told that it would be easier to modify the E-Commerce module in 4.7 where Form API is used. However, it seems to me that not everything can be modified by Forms (yet). Here is an example:

Assume we want the price of the product to not be shown to the user. The price appear by the function theme_node_product in product.module as the following:

Ok kids,

Lets see if anyone has attemped to make this module yet, before I try to string something together.

What I need is a solution for a small, non-profit cinema to automatically list all the showtimes of all their films once per week. It would have to do these things:

1. List a set of reoccuring showtimes for each film across a couple of days. For example, Brokeback Mountain plays at 5, 8, 11PM on Mon - Thurs. That information should only need to be listed once. The Events.module can handle a little bit of this, but not all.

So I'm working away on this fine and dandy new 4.7 forms structure.
Looks a bit verbose, but I can see how it all pays off.

BUT

I need a table. I want to use the nice Drupal table builder, and I'd like to use the nice form builder.
But damned if I can see that happening.

Yes, my data is tabular.

Hi,

There is probably a simple answer to this question, but I'm not yet familiar enough with the inner workings of Drupal, so I hope someone can help.

With the Events module, the minutes drop-down menu includes values 0-59. In reality, I only need 00, 15, 30, 45 as selections for minutes.

Is there a way to limit the display of the drop-down to have only those values?

Thanks

Is there a module that allows Drupal users to upload multiple files at one time? I see that some modules allow upload of multiple image files, but I would like to upload multiple .mp3, .mpg, .doc, .pdf and other files at the same time.