I love this yarn, light peach, 7 oz, 199 g, 355 yd, 325 m, about 2/3 of skein
US H-8/5.00 mm

Stitches you need to know
Half double crochet
Double crochet
Front post double crochet=FPDC
Back post double crochet=BPDC
Single crochet
Slip stitch
Optional=how to color change

Tips and thoughts

An adult size hat measures 6 3/4” across the circle before you stop increasing.
This pattern does not address color change.

Gauge= why bother?
I think hats are sometimes difficult for some people to make. Even if you use the exact yarn and the exact hook size, we all crochet a little differently, our tension is different. I tend to crochet loosely and my stitches are tall. So yes, to be able to make a successful hat and have it fit, please do a gauge Swatch.

11 DC x 5 rows=4”