> For the complete documentation index, see [llms.txt](https://help.modelreef.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.modelreef.io/help/getting-started.md).

# 📘 Getting Started

- [What Is Model Reef?](https://help.modelreef.io/help/getting-started/what-is-model-reef.md)
- [Core Concepts Overview](https://help.modelreef.io/help/getting-started/core-concepts-overview.md)
- [Time & Periodicity Basics](https://help.modelreef.io/help/getting-started/time-and-periodicity-basics.md)
- [Key Entities (Variables, Drivers, Branches)](https://help.modelreef.io/help/getting-started/key-entities-variables-drivers-branches.md)
- [Naming & Structure (High Level)](https://help.modelreef.io/help/getting-started/naming-and-structure-high-level.md)