Presumably by the time the grace period expires we will have access codes.
Go to the Webassign login page at https://www.webassign.net/login.html
Click on the "I HAVE A CLASS KEY" button, then fill in the key: stonehill 8113 9541 (as indicated in the screen image) and click Submit
Click on "Yes, this is my class" to verify the code.
Select the "Yes I need to create a WebAssign account" and click Continue.
Fill in the information in the Self-Enrollment screen and click Create My Account.
When the account is created, click Log in now.
Select "continue my trial period (xx days remaining)" and click Continue.
Click on "Section 6.1 Syllabus Problems (approximately)" to access the first assignment.
The following screen should appear:
Scroll down to see individual problems. Note the various options under "Need Help?".