Use this guide to help you navigate some aspects of customizing the search in Orchard. Afterwards you will be able to index fields of a part in the example I will be using price and indexing a quick mock of products.
The key parts are:
Aim: Produce a slider carousel that displays a list of content items. Lets pick a random slider (why not).
Needed: Orchard.Projections; Unslider
The module can be achieved quite quickly with the following steps: