This Beginner Crochet Hat pattern is great for new crocheters. It requires a couple of basic crochet stitches, as well as seaming, and closing the top of crochet beanie with a yarn needle.
You crochet the rectangle back and forth in rows, then you will seam using the whip stitch and close the top of the hat as shown in the linked tutorial.
To make this easy crochet hat pattern shown in the pictures a yarn with yarn weight size 4 was used. However if you follow suggestions through the pattern, you can use any yarn.