# Day AI > Day AI is the AI-native CRM: customer relationship management built on > conversations — email, meetings, and calls — instead of manual data entry. > The CRM is a cache; the conversations are the record. The main site (https://day.ai) is a client-rendered app. The resources below are plain markdown/text, readable without executing JavaScript. ## Courses - [Advanced RevOps — course index](https://modern-revops-course.s3.us-east-1.amazonaws.com/course/advanced-revops/llms.txt): free 14-chapter course on AI-era revenue operations; per-chapter markdown links - [Advanced RevOps — full course, one file](https://modern-revops-course.s3.us-east-1.amazonaws.com/course/advanced-revops/llms-full.txt): every published chapter as plain markdown - [Advanced RevOps — book edition (PDF)](https://modern-revops-course.s3.us-east-1.amazonaws.com/book/modern-revops.pdf): the designed ~190-page eBook - [Advanced RevOps — course kit (zip)](https://modern-revops-course.s3.us-east-1.amazonaws.com/kit/modern-revops-kit.zip): every template and RMBL artifact from the course ## Optional - [Read the course in a browser](https://day.ai/courses/advanced-revops): the interactive course site - [Course landing page](https://day.ai/go/advanced-revops-with-ai): get the eBook by email