Trying to crochet a purse. What does 12 dc=4" over pattern to check gauge mean? Do...

Trying to crochet a purse. What does 12 dc=4" over pattern to check gauge mean? Do...

...I need to make a square?
How do you know how many rows to do? Do you assume that 12 dc means 12 rows with 12 dc in each row?
 
Top