I created a simple bottom up crochet Amigurumi doll for beginners, it does use the 3 main stitches so basic knowledge is needed. But it's a simple pattern that will give you a cute doll when finished.

With most Amigurumi you want to use a smaller hook than the ball recommends. I like using a 3.00mm for dk weight and a 4.25 for worsted, but I crochet tight, No gauge necessary just crochet with a solid tension to avoid gaps