adding fields to database and edit form

Hi all,

We’re trying to find out which CMS is the right one for us. Our site is going to have a database of artists, albums for artists, releases for albums, and reviews for releases.

I’ve worked with Joomla for some time now. I’ve tried Seblod which was quite complex and documentation is terrible to non-existent. I am a PHP programmer and didn’t get the configuration parts of this. Also, I think the Joomla DOM is unnecessary complex, you need a lot of files all over the place to make something work.
Then the Joomla plugin K2. Although much easier to work with for a programmer, it also is a star in lacking documentation.

Tried Drupal, but the steep learing curve (again, the DOM) does not give much confidence.

So why not WP? With a larger database I read it’s much better in performance. It’s just that we were told writing extensions was harder for WP than for the others. But now I start to realize that was a remark by people who like configuring existing plugins instead of PHP programming.

So, I guess I will have a categories Artist (fields like Name, Country, Info), Album (Title, SortOrder, link to Artist), Release (Label, Catalog, ReleaseDate, link to Album), and Review (regular article fields plus link to Release).

What would, in a few general steps, be the way to go? I assume categories Artist, Album, and Release; then create templates to edit these categories and plugins to store the data in separate tables?

Just a few keywords so I know where to look would be great. I will then know what to find for and read before the next step.

Thanks!
Jerry