Starting out with S3, need to create a paid account

Hi, is what you want to know in the FAQ?

https://aws.amazon.com/free/free-tier-faqs/

The S3 free quota is only 5GB so that you will be charged for any usage beyond that. This will be charged based on the payment options you set up when you created your account.

https://aws.amazon.com/free/

https://docs.aws.amazon.com/ja_jp/awsaccountbilling/latest/aboutv2/manage-payments.html