Extending Nodes:
This is going to be easy like downloading CCK modules and copying them into the modules folder and checking the box so Drupal identifies them. Here CCK stands for content creation kit and pretty much any field you will need has already been created. Fields do not have restriction to only one item but you can customize them as per your needs and the fields in your Content Type settings do things filling in or allow the end user to upload as many images as they want.

Display:
Displaying the data which are being contained by nodes is relatively easy using the built in features of Drupal. The default option of installed lists items on the home page that have been marked as promoted to the front page.

You can create various pages simply by using views and clicking a few available options to select which nodes you’d like to be displayed such as choosing your display layout and items with paging controls and few others for that you just need to set a page path and Drupal does the rest.

What if you not have clear understanding of how that is going to be displayed then you can also do theme overrides and template files to show the data in alternative formats. Drupal is an open-source system and the community base is so large and helpful due to the reason building your own custom module to display the data is not far out of reach for mid-level PHP programmers. gtamp.