This is an easy pattern. Basic skills: knit, purl, k2tog, ssk. Only one color per row, but the pattern appears a lot more complex.

The pdf includes instructions for two hats:
“Midnight at Rockaway Beach”.

Yarn: Knit Picks Wool of the Andes Sport
One - 50 gram skein each: Tumeric, Dove Heather, Pampas Heather, Forest Heather, Aurora Heather, Sapphire Heather, and two - 50 gram skeins: Solstice Heather. Will make two adult hats, or one adult and one teen sized hat.

and “The Three Sisters” hat:
Yarn: Knit Picks Wool of the Andes Sport
One 50 gram skein each: Amethyst Heather, and Blossom Heather
Two 50 gram skeins: White
These three skeins will make three adult and one teen hat by changing the arrangement of the main and contrasting color placement. Pattern charts for all colorways included.

Size 6 needles, 5.5 sts per inch.