Help with understanding this pattern

Hi there, I am currently working on a hat I got the pattern from someone on ravelry this is where I am stuck. What does WS and RS stand for? And what does 10 (11,12) mean I don’t understand the numbers. Thank you.

Next row (WS): Slip 1, knit to end.
Next row (RS): Slip 1, ssk, knit to last 3 stitches, k2tog, k1.
Next row (WS): Slip 1, knit to end.
Next row (RS): Slip1, ssk, knit 10(11,12), place these 12(13,14) stitches on a holder, bind off 12(14,18), knit to 3 stitches from the end, k2tog, k1. 12 (13, 14) stitches remain on the needle.

RS is right side. WS is wrong side. If you were doing stockinette stitch, the right side would be the knit side and the wrong side would be the purl side. Make sense?

Those numbers represent the different sizes. It’s giving you a choice of which size. If you are working on the smallest size, then you use the smallest number. If you are making the middle size, then you would use the number that’s on the left inside the parentheses. Same for the largest size.

It all depends on what size you’re making. I would recommend making a copy of the instructions and taking a pencil and circling the correct number every tiime you see that little “group” thing, all the way through the pattern, so you don’t lose track.

knitcindy

Thank you both. Now it makes sense. It’s my first time making a hat and I am one of those who learned to knit on their own.