This pattern is a written pattern with lots of pictures.
Written in US terms, you will need to know how to do sc, hdc, sl st, ch, and fpdc.
Although I would personally set the difficulty of this pattern as intermediate, don’t let that scare you. I have included lots of photos to help you through the pattern and even the novice crocheter could make this hat. Once you get the pattern repeat, this hat works up quickly.
Hat sizes include 6-12 month, toddler, child, and teen/adult.
For sizes 6-12 month and toddler, you will need light weight yarn (about 2.5 ozs) and a 4.5mm hook.
For sizes child and teen/adult, you will need worsted weight yarn (about 2.5 ozs) and either a 5.0mm or 5.5mm hook.
I used Loops and Threads Snuggly Wuggly Light weight yarn (color pink) for the pink 6-12 month sample shown.
I used Loops and Threads Impeccable (color Aqua) for the child size hat on the model.

As always feel free to PM with any questions or if you need help. Happy crocheting!