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- Sign into AWS Console, and choose Services → Compute → EC2
- Choose Instances on the left side
- Click "Launch instance"
- On the left, choose Marketplace
- Search for, and select, CoreOS
- Choose t2.micro (free) for your instance size
- Configure instance details (networking / monitoring / autoauto-scaling / protection from accidental termination / etc)
- Configure tags (completely optional and arbitrary)
- Configure security groups (you'll likely want to add at the very least SSH / HTTP / HTTPS)
- Review and click "Launch" and you'll be prompted to assign or create a key pair for this instance
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