How to Use the OPC Site
The data has been processed and presented in several ways:

Families Master Standard Surname Index

Spelling of surnames was not standardised until well into the 19th Century. Consequently if one is researching a family, one must be prepared to search for all possible variations of the spelling. I have helped you here by linking every entry in the registers to a list of modern-day equivalent spellings.

Selecting a name from the list will take you to a consolidated list of Baptisms, Marriages and Burials for all variants of that family name.
Surnames Master Surname Index

This is a raw list of surnames just as they appear in the registers. Selecting a name from the list will take you to a list of Baptisms, Marriages and Burials for that variant of the name only.
Registers Consolidated Register List

A consolidated list of register entries by date. The list is separated by year.