> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nexrex.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Quickstart

> Sign up, connect your data, and start your first plan.

<Steps>
  <Step title="Create your account">
    Download the NexRex app or open the [web app](https://app.nexrex.ai) and sign
    up with email or a social login.
  </Step>

  <Step title="Connect a device or service">
    Link Garmin, Strava, or Apple Health so NexRex can analyze your activities.
    See [Connect a device](/athletes/connect-device).
  </Step>

  <Step title="Tell us your goal">
    Pick a race distance and date, or a general fitness goal. NexRex builds an
    adaptive [training plan](/athletes/training-plans) around it.
  </Step>

  <Step title="Run and review">
    Complete your first session, then open the activity to see your
    [AI coach insights](/athletes/ai-coach).
  </Step>
</Steps>

<Note>
  Coaching teams can invite athletes directly. If your coach sent you an invite,
  accept it first — your plan and roster access come from them.
</Note>