New to parsing json data

So what is your question exectly? The JSON path to the data you want would be data.0.1 or data[0][1]. However, HA comes with the feature to extract the values for you. For testing I installed this sensor (Yes cats, because its the internet :wink: ):

rest: 
    - resource: https://catfact.ninja/fact
      scan_interval: 10
      sensor:
        - name: "fact"
          value_template: "{{ value_json.fact }}"
          json_attributes_path: "$."

The JSON provided by this API looks like:

{
  "fact": "The strongest climber among the big cats, a leopard can carry prey twice its weight up a tree.",
  "length": 94
}

In the developer tools → templating a simple {{ states('sensor.fact') }} gives:

A cat has more bones than a human being; humans have 206 and the cat has 230 bones.