Knitting Needle Conversion Chart
Compare metric / UK / Canadian / US sizes and hook sizes (B, C, D etc)
Resources for the knitter
Knitting pattern abbreviations and stitches
A collection of abbreviations and their meanings
Yarn Weight Chart (or 'how many WPI is that?')
You can check the weight of a yarn (chunky, aran, dk etc) by checking the wraps per inch. Here's how.
Yarn calculator (how many yards do I need to make that?)
Your pattern tells you you need so many ounces of a certain type of yarn, or worse still, doesn't tell you how much yarn you need. How many yards do you need?
I've made this handy calculator which will work it out for you.
Washing instructions / symbols for a handspun / wool garment
What washing instructions / symbols should you attach to a wool garment (particularly handspun yarn where you don't have a yarn label) and what do the symbols mean?