Now - that all depends on what your working on
My best advice is to try to follow a pattern (which should give you suggested yarns), but then don’t be afraid to experiment.
The crochet blanket was soft cotton DK - washable for baby. The granny squares work up with a 4mm hook and grow very fast. I’d use DK for any granny square blanket. You’ll be amazed how quickly it grows once you get going.
I’ve used some lovely Rowan chunky weight wool to make floor cushion covers, and aran for a few blankets/rugs.
For kids clothes, bags and scarves I tend to use DK if I want it to knit/hook up quickly. I’ve used some 4-ply, but it does seem to take longer.
I use the very fine weight stuff for the snowflakes and what’s called filet crochet. I like the delicate look, and am about to experiment with some very fine silk thread.
To be honest, I’m a stasher - I collect yarn from charity shops and shops and then see what I can make with it! After a few ‘follow the pattern’ bits I got much more confident about substituting thread - just remember to check the gauge if sizing is important!
I’ve used 2-ply silk as well, and that’s lovely (if expensive) to work with. There’s a lovely pattern in one of my books for an heirloom silk blanket! It’s great, I just can’t eat chocolate at the same time.





