From 1 July 1837, civil registration gives us birth, marriage and death certificates with names, dates and places. Before that, the paper trail depends on the parish. In 1538 Thomas Cromwell ordered every parish to keep a register of baptisms, marriages and burials, and although survival is patchy — especially for the earliest decades — the registers that remain are the single richest source for family historians working back into the sixteenth, seventeenth and eighteenth centuries.
Two later rules shaped what you will find. From 1598, parishes had to copy their older paper registers into parchment books and send annual copies, known as bishops' transcripts, to the diocesan authorities. In 1812 an Act usually called Rose's Act required separate printed registers for baptisms, marriages and burials, with more standardised information. Knowing which regime an entry falls under tells you roughly what it will contain.
Baptism, marriage and burial entries are not birth, marriage and death records. That distinction matters constantly.
Locating the parish is often harder than reading the entry. Work out where your family lived, then check the likely parishes around it, remembering that a farm might sit in one parish while the nearest town is in another. Parish boundaries, chapelries and extra-parochial places complicate this, as does the fact that a family might worship at a neighbouring church if their own was a chapel of ease.
Most original registers now sit in a diocesan record office or county record office, not in the church. That is where you consult the originals or microfilm copies, and where bishops' transcripts may fill gaps where a parish register is lost. Ask staff what else survives: churchwardens' accounts, settlement examinations and overseers' papers can name people the registers only hint at.
Tudor and Stuart registers are frequently written in secretary hand, a cursive script quite unlike modern writing. Look for a looped 'e', a 'c' that resembles a modern 'e', a long 's' like an 'f', and 'w' and 'm' built from repeated strokes. From the later seventeenth century, most registers switch to a rounder italic hand, which is much easier going. You will also meet abbreviations: Xpofer for Christopher, Xian for Christian, and shortenings such as Wm, Tho, Eliz and Rich.
Many registers were kept in Latin until the 1730s, so expect baptizatus, nuptus, sepultus, filius and uxor. Dates need care too. Until 1752 the legal year began on 25 March, so an entry dated January 1700 may really belong to 1701 as we count it; writers often used the form "1700/01". Regnal years, such as "in the 12th year of Queen Anne", are another dating system to recognise.
Write down the full reference for every entry — parish, register type, year, page or entry number — and transcribe exactly what you see rather than what you expect to see. Note anything unusual, including blank spaces, crossings-out and marginal notes, which often explain a later difficulty. That patience pays off: it is the small, careful details that turn a name on a page into a recognisable ancestor.