I need a form to enable user to enter event info in three fields (what, where, and when). Then I would like to be able to present the events in tabular form. I don't know PHP. Does drupal have a module for this purpose?
Will create quick forms for you on the go.
This one is a little bit more envolved, but more definitive, common place, and HIGHLY extensible. Here's a nice little tutorial as well.
The content construction kit (CCK) allows you to create content types with custom fields, and automatically produces the forms for those content types. You'll probably also want the date field for the when.
If you don't want the results (events) to turn into nodes when the user enters the data and submit the form, then you should look into the webform module.
A while back I "demoed" this to my peers by building a "mcdonald's monopoly" tracker that anyone could use to input their pieces and then I setup a view as a block to display the aggregate result for everyone's pieces.
We didn't win anything, but this may be what you are looking for.