diff --git a/spreadsheets.qmd b/spreadsheets.qmd
index 489438c..dd48a73 100644
--- a/spreadsheets.qmd
+++ b/spreadsheets.qmd
@@ -554,7 +554,9 @@ This is the same dataset as in @fig-students-excel, except it's stored in a Goog
 knitr::include_graphics("screenshots/import-googlesheets-students.png")
 ```
 
-The first argument to `read_sheet()` is the URL of the file to read, and it returns a tibble:
+The first argument to `read_sheet()` is the URL of the file to read, and it returns a tibble:\
+<https://docs.google.com/spreadsheets/d/1V1nPp1tzOuutXFLb3G9Eyxi3qxeEhnOXUzL5_BcCQ0w>.
+These URLs are not pleasant to work with, so you'll often want to identify a sheet by its ID.
 
 ```{r}
 #| include: false
@@ -563,8 +565,8 @@ gs4_deauth()
 ```
 
 ```{r}
-students_url <- "https://docs.google.com/spreadsheets/d/1V1nPp1tzOuutXFLb3G9Eyxi3qxeEhnOXUzL5_BcCQ0w"
-students <- read_sheet(students_url)
+students_sheet_id <- "1V1nPp1tzOuutXFLb3G9Eyxi3qxeEhnOXUzL5_BcCQ0w"
+students <- read_sheet(students_sheet_id)
 students
 ```
 
@@ -572,7 +574,7 @@ Just like we did with `read_excel()`, we can supply column names, NA strings, an
 
 ```{r}
 students <- read_sheet(
-  students_url,
+  students_sheet_id,
   col_names = c("student_id", "full_name", "favourite_food", "meal_plan", "age"),
   skip = 1,
   na = c("", "N/A"),
@@ -589,14 +591,14 @@ It's also possible to read individual sheets from Google Sheets as well.
 Let's read the "Torgersen Island" sheet from the [penguins Google Sheet](https://pos.it/r4ds-penguins):
 
 ```{r}
-penguins_url <- "https://docs.google.com/spreadsheets/d/1aFu8lnD_g0yjF5O-K6SFgSEWiHPpgvFCF0NY9D6LXnY"
-read_sheet(penguins_url, sheet = "Torgersen Island")
+penguins_sheet_id <- "1aFu8lnD_g0yjF5O-K6SFgSEWiHPpgvFCF0NY9D6LXnY"
+read_sheet(penguins_sheet_id, sheet = "Torgersen Island")
 ```
 
 You can obtain a list of all sheets within a Google Sheet with `sheet_names()`:
 
 ```{r}
-sheet_names(penguins_url)
+sheet_names(penguins_sheet_id)
 ```
 
 Finally, just like with `read_excel()`, we can read in a portion of a Google Sheet by defining a `range` in `read_sheet()`.