Every time I need to look up how to do something, or stumble across a new (to me) technique, I try to remember to record it here.
This list started as a ravelry project page, and I've now copied the links here and imposed a bit more structure. Going forward I will add new discoveries to this version.
Beginning and ending
Åsa Tricosa's winding (provisional) cast on.
Åsa Tricosa's crochet cast on (for necklines, underarms, etc).
Loop cast on for the middle or end of a row (e.g. underarm or front neck).
Italian cast on aka tubular cast on or kitchener cast on - great for ribbing (non-provisional cast on version).
Super stretchy double needle cast on.
Lucy Neatby's Modified Conventional Bind Off.
Åsa Tricosa's stretchy cast off.
Åsa Tricosa's German Short Rows photo tutorial.
TECHknitting Jogless one-row stripes.
Two-handed colourwork: Philosophers wool and Cotton & Cloud: Episode 6.1, Episode 6.2, and Episode 6.3.
TECHknitting Another way to handle long floats.
Ysolda's Colour Dominance in colourwork.
Helene Magnusson's Jogless joins in colourwork.
Garments and accessories
Sweaters and cardis
Top down set in sleeves - includes useful hints on short rows and how to tighten up the picked up stitches.
Cocoknits Bias bind-off for shaping shoulders.
TECHknitting Tulips buttonhole - a neat symmetrical buttonhole.
A great way to add a zip to a cardi (ravelry).
This also includes links to other people's lists on ravelry.