Step by step instructions ot launch a CloudFormation template

    In the AWS Console, click Services, then click CloudFormation to open the CloudFormation dashboard.
    Make sure you are still in the Oregon AWS Region.
    Click Create Stack.
    Download the AWS CloudFormation template to create a VPC and save it locally on your computer.
    To select the AWS CloudFormation template you just downloaded, click Choose file.
    Click Next.
    In the Stack name textbox, type edx-vpc-stack.
    Click Next. Skip the Options page and click Next.
    Click Create. You will notice that the status of the template is CREATE_IN_PROGRESS.
           The template should finish creating in a minute.
    In your AWS Management Console home page, in the AWS services search textbox at the top,
                  type VPC, and then select VPC to open the VPC dashboard.
    In the VPC dashboard, on the left navigation menu, click Your VPCs. You will see a VPC 
named edx-build-aws-vpc in the list. Write down the vpc-id of the edx-build-aws-vpc. You will
 need the vpc-id in subsequent exercises.
    In the VPC dashboard, on the left navigation menu, click Subnets. You will see four
 subnets starting with edx-subnet-xxxx. Write down the subnet-id of edx-subnet-public-a.
 You will need the subnet-id in subsequent exercises.