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

# Getting Started

Start here: create an account, get an API key, and make your first call to Nebula Block.

New to Nebula Block? Work through these in order.

|                                                              |                                                              |
| ------------------------------------------------------------ | ------------------------------------------------------------ |
| [**Quickstart**](/getting-started/get-started/quickstart.md) | Create an account, get a key, make your first inference call |
| [**Account**](/getting-started/get-started/account.md)       | Sign-up, activation, profile, and password management        |
| [**Billing**](/getting-started/get-started/billing.md)       | Credit, payment methods, auto-pay, and invoices              |
| [**Products**](/getting-started/get-started/products.md)     | What Nebula Block offers and which tier each product needs   |

Once you are set up, the [Model Catalog](/products/serverless-inference/model-catalog.md) lists everything you can call, and the [API Reference](/api-reference/api-reference.md) documents every endpoint.