The most basic method used in nearly every sewing project.
These are methods for woven fabrics.

Hand sewn seam – video from Bernadette Banner.
Until about a century ago, all clothes were made this way, and couture ones still are (celebrate that modern sewists have the time to do this to high quality).

All the following links are to written tutorials with photos.

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Machine sewn seam :
Sewing an open (plain) seam
Pressing an open seam
20 different seams from Sew Guide

Seam finishes :
These general posts include both ‘open’ and ‘enclosed’ seam finishes :
Grainline Studio on seam finishes.
In the Folds Seam Finishes, also includes hem and facing edges.
Five seam finishing techniques (Sew Essential)

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And here are some individual tutorials.

Plain seam finishes :
Getting a better zigzag seam finish.
Examples of serged seam finishes from sdBev (wrong side of seam shown left, right side of seam at right).
Hong Kong and bias bound seams, from Closet Core patterns.

Enclosed or ‘self-finished’ seams :
Flat fell seam without a special folding foot, from Sew Me Something patterns.
Flat fell seam ending in a seam split, from Carolyn.
A ‘welt’ seam is like a less bulky flat felled seam, as it only has one side tucked in. So it is only partially enclosed.
French seam, curved french seam, mock french seam.

Converting a pattern to overlapped seams in boiled wool, fleece – pdf (not free) from Cutting Line Designs.

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First published July 2020, links checked February 2021

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