I am very new to knitting. I'm working on my first project (a scarf, of course! ) I have a question about the amount of yarn needed for a scarf. Obviously I know that a lot depends on what type of yarn you're using, what size needles, etc. But is there any sort of guideline or "rule of thumb" to estimate how many yards or grams of yarn you'll need? I'm worried that I didn't buy enough to complete my scarf.
Any help would be greatly appreciated! Thanks!