Yes it helps to possess fine motor skills and a modicum of patience for these. This is old-school stuff.
Pull back the string, but NOT TOO MUCH, then gently unwind the paper to reveal the waxy "lead". If you rush it, you'll tear the paper off too soon, and then you'll have to pull the string again, and start over. Whatever, it's not a disaster, just take your time and you'll get the hang of it.
12 Colors per box (Black, Brown, Light Blue, Dark Blue, Pink, Red, Orange, Light Green, Dark Green, Violet, Yellow, White)