Follow this blog to learn to create a new IAM user in AWS Console.
Creating IAM User allows us to use AWS services from our local system code.

• Navigate to Services > IAM > Users

• Select Create New User
  And Specify User Details

  

• Next Set Permissions
  For trying out AWS Services without any permission issues, provide AdministratorAccess to the new User.

  

• Review and create new User.

• To use the User from the local system Select the User and select create new Access Key.

  

• Description tag is optional, then review and create the access key.

• Once Access key is created, save the Access Key ID and Secret Access Key ID and the same in environment variables of your system.

• Install AWS CLI and check the aws --version to check the installation.

• Run the below command to verify the environment variables setup.

    aws sts get-caller-identity
  

  We will setup new user in AWS console and attached with local system which allows us to use AWS services.