The Nodekit is the software required to use your Tagtool. It's called Nodekit because it features a visual editor that lets you customize your Tagtool setup - the different components of the software are displayed as “nodes”, little boxes that have editable parameters and are connected with each other to form the Tagtool patch.
Here's some background info about the Nodekit and future developments.
You can download the latest Nodekit version on the Tagtool DIY page or directly from SourceForge.
The following tutorials all cover the latest Nodekit version. If differences to prior versions exist, you can find links right under the tutorial heading leading to instructions for the older releases.
How to setup a MIDI-device for Tagtool
How to switch between 5 and 6 slider Tagtools
How to change the anti-aliasing level
(useful if your computer seems slow when running Tagtool)
How to change border color of drawing 'star'
How to change the Bounce of the Tag
How to use the Session Manager
Tutorials for older Nodekit versions: