Price Catalogs

1- What would be the exact process to create a price catalog, I mean to say any scenario for understanding or navigation
2- Can you please mention page reference and pin point the exact place where I can view the feature workability in oracle purchasing user guide
3- I actually want to practice it in my ERP test instance and facilitate our client.
4- Is there any difference between price catalog and Supplier item catalog? if yes then what would be it.
5- Please refer any community note or white paper which can help the cause.

6- Please need assistance in all modes of price catalog creation.