I admit, it's not that easy to understand. But let me explain:

To make ANY api request you'd need to be registered as a developer. Therefore head over to http://developers.trackbase.net/ and register (http://developers.trackbase.net/account/signup). After you activated your account, you'd need to create an app. When that's done you can access all of our APIs. The error 1 "Please supply more information" usually is the result because you also need to add following parameters to your request, which you - by the way - need to do for ANY request you want to make (in order to identify yourself to TrackBase and the API):

- application identification number (supply as 'app' and add the value of your app to it)
- relation token (supply as 'token' and add the value of your app to it)
- application authentication key (supply as '_aak' and add the value of your app to it)

Source: http://developers.trackbase.net/how-to-use

Hopefully I could help you further.

/JoNny