The FreeREG Project provides free Internet searches of baptism, marriage, and burial records, which have been transcribed from English and Welsh parish and non-conformist church registers.
The largest single collection of Parish Register copies and transcripts is at the Society of Genealogists, and these searched for in the (online) catalogue of the library of the Society of Genealogists.
The contents of missing Parish Registers can often be obtained by finding the copies that since 1598 have had to be made annually and sent to the bishop, i.e the Bishop's Transcripts. The standard source for locating such copies is: J.S.W. Gibson, Bishops' Transcripts and Marriage Licences, Bonds and Allegations. (FFHS Publications).
Tithe payments, used to support the clergy, are fully explained on this National Archives page - Tithe Records.
G. Jaunay. A Parish Finder for England, published by Adelaide Proformat: South Plympton, Australia (2000) 468 p. Includes Ordnance Survey references for all English parishes, both ancient and modern, their diocese, deanery and county as at 1974, their date of creation and dedication, indicating for modern parishes the ancient parish(es) from which they were created, etc.
Stan Mapstone once put online the list, as certified to the Registrar-General, of Denominations in England and Wales in 1867. Unfortunately these disappeared the closure of AOL's hometown pages, if anyone finds them online at another URL, please let me know using the report link below