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doc/source/chapter03_advanced-tutorial/iam-role.rst

@@ -10,7 +10,7 @@ What is Identity and Access Management (IAM)
 
   **X is allowed to use Y**
 
-"Y" is generally some AWS resources, like EC2 or S3. In the most common case, "X" can is a specific user. You can create multiple **users** under a single AWS **account** (an "account" is tied to a single credit card); each user can have its unique ID, password, and permissions. This is useful for managing a research group, but not quite useful if you are the only user.
+"Y" is generally some AWS resources, like EC2 or S3. In the most common case, "X" is a specific user. You can create multiple **users** under a single AWS **account** (an "account" is tied to a single credit card); each user can have its unique ID, password, and permissions. This is useful for managing a research group, but not quite useful if you are the only user.
 
 The :ref:`Researcher’s Handbook <researcher-handbook-label>` has very detailed instructions on how to set multiple users (called "IAM users"), so I will not repeat it here. You, the account owner, are also encouraged to create an IAM user for yourself, instead of using the root AWS account to log in (as you've been doing till now). This is again for security reasons. An IAM user will never have access to the billing information and your credit card number, even if that user has the most powerful "AdministratorAccess" which is almost equivalent to root access.