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Step One: Sign up for Salesforce Developer Edition
Developer Edition provides a free and easy solution so that you can use Salesforce for
testing and development.
To sign up for a Developer Edition account, go to developer.salesforce.com/signup.
If you have a development sandbox, you can use it with these examples.
Before you begin, verify that your user profile has the API Enabled permission by following the instructions in User Permissions in Salesforce Help.