You might work both in the Arm Treasure Data console and using the command line interface (CLI).
You are given access to the cloud-based Treasure-Data console when you obtain a Treasure Data account.
You install the Treasure Data Toolbelt to establish the CLI development environment.
Your TD installation includes td-agent which is a data collection daemon.
You have the option of including more specific or robust log collecting tools: Server-Side Agent or Fluentd.