I am having trouble understanding crochet instructions. It says "Ch 1. 1 sc in each ch around. Join with sl st to first sc. 24 sc. Here's a copy of the instructions to what I'm trying to make:

With MC and larger hook, ch 24. Join in ring with sl st into first ch, taking care not to twist ch.
1st rnd: Ch 1. 1 sc in each ch around. Join with sl st to first sc. 24 sc.
2nd and 3rd rnds: Ch 1. 1 sc in each sc around. Join with sl st to first sc.
4th rnd: Ch 1. *2 sc in first sc. 1 sc in each of next 11 sc. Rep from * once. Join with sl st to first sc. 26 sc.
5th and 6th rnds: As 2nd and 3rd rnds.