Hi @GRoss,
https://letsencrypt.org/docs/integration-guide/ is written for hosting providers who are interested in integrating with Let’s Encrypt. However, it assumes some familiarity with how the service works.
There is more general information at https://letsencrypt.org/docs/ which might be helpful, and also List of Client Implementations includes all known compatible client software which a hosting provider could use as a basis for its integration work. We are also happy to receive questions and they’re welcome to contact us (or post here on this forum!).