What does holding the yarn double mean?
Holding yarn doubled or holding doubled throughout simply means to knit with two strands of yarn as though they were one strand. … If your pattern calls for two skeins of yarn while knitting double throughout, then use a strand from each skein at the same time.
What do you use fingering weight yarn for?
Fingering. Fingering weight yarn is often used for socks, lightweight sweaters and accessories, and Fair Isle or colorwork patterns. Fingering weight is sometimes listed as “baby yarn” or “sock yarn” and is about double the weight of lace yarn. Fingering weight yarns are typically knit on US 1-4 needles.