Hi. I'm _completely_ new to AWS, tried to run a centos image (via ansible), here are things I bumped into and doc suggestions:

1. First I tried a non-marketplace image, because I needed ami-... id and this was right there:

| CentOS Linux 7 | 1801_01 | 2018-Jan-14 | us-east-1 | ami-4bf3d731 | x86_64 | HVM |

"Instance creation failed => AuthFailure: Not authorized for images: [ami-4bf3d731]" Don't really care why, but details in case you do: https://gist.github.com/cben/2ab1200592153c4fff64fd63bc77c6ef

Andrew Butcher told me he uses ami-4bf3d731 from Marketplace. Tried to use it directly, got "OptInRequired: In order to use this AWS Marketplace product you need to accept terms and subscribe. To do so please visit https://aws.amazon.com/marketplace/pp?sku=aw0evgkw8e5c1q413zgy5pjce" Did work after going through Marketplace Subscribe process.

2. For an API user (ansible etc) that just needs an ami-... id, and is newbie to AWS, it'd be helpful if near "Images" section marketplace links it would the briefly explain the steps something like: "You need to click "Continue to Subscribe", then in Configuration screen you can choose version & region and get AMI id. You need to accept terms (and the $0/hr price) once before you can use the AMI."

3. "Finding AMI ids" section should also mention you have to "Subscribe" and accept before using an ImageId from `describe-images` command. Or if there is a command-line way to subscribe, that'd be even better!

Regards,