Yes, yf is yarn forward, and you bring the yarn between the needles as if you are going to purl. When you knit the next stitch, you'll get an increase and an eyelet.
k2tog twice just means to do two k2tog in a row.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry