4 conventional scarf shapes, one capelet, two cowl styles, two skinnies, one lace, one loose cable, one wavy, one stripey, one in strands and one crossover neckwarmer.
Yarns vary in thickness, it doesn't really matter if you can't use exactly the same yarn as tension is given and the "0" (fine laceweight yarn) to "5" bulky indicator is shown, so you can see what's needed. Absolute sizing isn't crucial for anything in here.
All are wearable and most are easy to make. The one using Rowan Kidsilk which is a pricey yarn only uses one ball so ends up being bearable. However the stranded one uses 4 balls of Noro Iro which is a chunky yarn and not cheap so some scarves cost a lot more than others. The green one on the cover uses chunky weight wool and alpaca, it says it takes 5 oz and for something measuring about 12" x 8" that's pretty extraordinary. The wool and angora scarf (4 balls needed) has gaps along its length, allowing it to be pulled through and looks cosy and comfortable. All in all, not a bad mix. The book doesn't cost a fortune, and neither will the scarves if other brands/yarn types are substituted.
Instructions are fine, clear and easy to follow.