The online Genealogy In Time Magazine recently featured the first of a multi-part guide to English genealogy. It is very detailed and well worth the read.
The article takes a chronological approach to the subject; that is, it first examines the types of records that exist in a given time period, and then goes into how one would find those records.
You can find Part I of the article at:
A Date Guide to English Genealogy (Part 1)