preface remove binder suggestion

Author: trevorcampbell

source/preface-text.md

@@ -60,17 +60,15 @@ Where are we going?
 ```
 
 
-
 Each chapter in the book has an accompanying worksheet that provides exercises
 to help you practice the concepts you will learn. We strongly recommend that you
-work through the worksheet when you finish reading each chapter
+work through the worksheet for each chapter 
 before moving on to the next chapter. All of the worksheets
-are available at
+are available at 
 [https://worksheets.python.datasciencebook.ca](https://worksheets.python.datasciencebook.ca);
 the "Exercises" section at the end of each chapter points you to the right worksheet for that chapter.
-For each worksheet, you can either launch an interactive version of the worksheet in your browser by clicking the "launch binder" button,
-or preview a non-interactive version of the worksheet by clicking "view worksheet."
-If you instead decide to download the worksheet and run it on your own machine,
-make sure to follow the instructions for computer setup
+For each worksheet, you can preview a non-interactive version of the worksheet by clicking "view worksheet."
+To work on the exercises interactively, follow the instructions in the worksheets repository
+to download all worksheets, and follow the instructions for computer setup
 found in {numref}`Chapter %s <move-to-your-own-machine>`. This will ensure that the automated feedback
 and guidance that the worksheets provide will function as intended.