Newb Question

I want to build a program but am unsure of where to start. I want to build something that would allow a user to enter different options/preferences and upon hitting the search button, it would pull like results from several in house databases. I'm not expecting this to happen overnight with my lack of skills but would just like a good starting point.

Slightly. Let's say that you wanted to buy a 4x4 yellow cube. In the dimensions field you would enter 4x4, in the color field, you would enter yellow and in the shape field, you would enter cube. Using those parameters i want to pull information from said databases that match with the search.