I essentially need a blogging system that allows registered users to make entries, allows others to respond, like many blog modules out there. But I also need for each entry to have, in addition to the text of the blog, other fileds that I define.

For example, lets say the users would use the system to track workouts or exercises. They could make free form notes in the
text section, but I could define other fields like weight, intensity, etc that would be associated with each entry.

The module would need the ability to let the admin(me) define the number of extra fields, type, and name of course.

Later I could then use the data associated in the extra fields to plot graphs and tables of progress, etc. Although I understand I might need to write this part myself.

Anyone have something like this?



Thanks.

Anyone have any ideas on this?

Or perhaps better yet, has anyone written a long,DETAILED, tutorial on mdule writing? Everything from menu items in Admin right on to creating forms, reporting pages, etc?