
Oh, picking yarn for a scarf is one of those fun parts of knitting that can make all the difference, especially when it's for your granddaughter. For beginners, I'd go with a worsted weight yarn since it's thick enough to see your stitches clearly without being too bulky or fine, which makes simple patterns like garter stitch or ribbing come together quickly and look great. It knits up cozy for winter without needing advanced skills, and you can find plenty of soft options that aren't overly fuzzy to avoid any skin irritation.
Think about feeling the yarn in person if you can, maybe at a local craft store, to check how soft it is against your skin and ensure it's not scratchy, when choosing. Look at the label for fiber details, aiming for blends that feel smooth and have some give, which work well for scarves that need to drape nicely. Acrylic blends are a solid choice for their washability and affordability, just make sure the one you pick has a bit of wool or cotton mixed in for extra warmth without the itch.
A good tip is to knit a small swatch first with whatever yarn you're considering to see how it behaves in your pattern and how it feels after a quick wash. That way, you can adjust if needed before committing to the whole scarf, and it'll help you build confidence as a beginner too.