The phrase "to read the directions" means to look at the instructions or guidelines that tell you how to do something.
Sentences with «to read the directions»
I also didn't read the directions on the frosting well enough and only used one block of cream cheese because that was all I bought, but it was still wonderful. (smittenkitchen.com)
For example, students accustomed to answering multiple - choice items may not read the directions carefully for each question. (blog.edmentum.com)
Always read the directions carefully and never use flea products designed for dogs in cats. (notinthedoghouse.com)