Blender is a free and open-source 3D creation suite.
With Blender, you can create 3D visualizations such as
still images, 3D animations, VFX shots, and video editing.
It is well suited to individuals and small studios who
benefit from its unified pipeline and responsive development process.
Being a cross-platform application, Blender runs on Linux, macOS, as well as Windows systems.
Audacity is a free, easy-to-use audio editor and recorder. It is available for all operating systems. Look here for the complete list of features.
This Blender Basics Classroom Tutorial Book by James Chronister (3d edition) for Blender version 2.49
Free Freemind Tutorial on mind mapping. The document is a pdf that will be downloaded to your computer.
Scribus Desktop Publishing Course. GIMP originally stands for "General Image Manipulation Program".
Like Photoshop, GIMP can be used to process digital graphics and photographs. Typical uses include creating graphics and logos, resizing and cropping photos, changing colors, combining images using a layer paradigm, removing unwanted image features, and converting between different image formats. GIMP can also be used to create animated images using an improved layers method. The full capabilities of the GIMP extend much further, however, and include advanced image editing, manipulation, and professional graphics creation.
The Inkscape tutorials are available in English, German , Spanish and French. Japanese and Norwegian are under translation.
This tutorial is by Mark Nottingham and the reader is supposed to have some familiarity with XML and other Web technologies.