This one skein hat is an easy knit for beginners. It was designed for use with Two Chimneys Farm's Southdown Babydoll yarn, a single-ply super bulky weight yarn. However, if you like intense color, Bartlettyarns Bright Orange Super Bulky would work too!
It uses a 16"- #13 circular needle (for the ribbing) and a 16"- #15 circular needle (for the body of hat). It is free with purchase of the yarn, or you can find the digital download on Ravelry.