GIMP merupakan akronim dari GNU Image Manipulation Program adalah software bebas FOSS yang memiliki kemapuan untuk memanipulasi atau memroses gambar (foto) seperti untuk "photo retouching", "image composition" dan "image authoring". GIMP acapkali disejajarkan sebagai padanan untuk Photoshop.

Sebuah tutorial oleh Michael J. Hammel yang diterbitkan secara berkala (setiap bulan) sejak Juni 2008 di majalah bahasa Inggris Linux Format membahas berbagai topik dan kasus pengolahan gambar. Terbitan dari 18 bulan terakhir dikompilasi dan kini tersedia dalam format pdf resolusi tinggi secara bebas.

Tuxradar merinci 18 topik yang dibundel (zip) dan dapat diunduh disini (PDF:90MB) sebagai berikut:

1. Product design for geeks: Geek is Chic! We show how a little penguin (and a little bit of Wilber) makes for fine fashionable wear.
2. Shattered face: She's breakin' up, captain! Our Gimp supremo shows how to make someone's face fragment and drift away in a few simple steps.
3. Leopard-style icons: A Leopard-based desktop starts with professionally styled icons. In this tutorial our Gimp expert makes icon design a breeze.
4. Sin City style: Our art guru goes all Frank Miller in this rainy, grainy Gimp graphics tutorial. One day a real rain's gonna come...
5. Summer of love: Our Gimp wizard lets you ride the retro rave of sunbeams and silhouettes in this tutorial.
6. Travel to the stars: Revel in the majesty of creation as our Gimp guru leads you through the process of making stunning stellar art.
7. Going to warp speed: Want to explore strange new worlds and seek new inspirations in your art? Here's how to make the jump using Gimp.
8. Create a fire goddess: Our graphics guru continues his journey on the fickle wings of inspiration. He invites you to fire up Gimp and join him on his travels.
9. Decay in the city: Even experts can learn something new. Our graphics guru shares his experiences using a Wacom tablet with Gimp Paint Shop.
10. Enhance the interface: Gimp contains a little-known back door to some powerful layour and preset features. We pick the lock and root through the stack.
11. iPod fun: Tune into pop culture with Gimp. Our guru creates an iPod advertisement faster than you can thumb your dial.
12. Use other tools: Mixing raster, vector and text is easier than you think. We explain how to integrate Gimp with Inkscape, Scribus and OpenOffice.org.
13. Text effects: With a blur, a colourise and some guides, our expert uses digital aging to add style and credits to the Wine bottle project.
14. 3D effects in Gimp: Master guides and paths to create 3D-looking images with ease.
15. Speedy colour fixes: Smile big and show your colours as we guide you through quick colour fixes for your photos.
16. Printing and colour: Gimp, CUPS and Gutenprint are a fellowship that can lead you on your quest for high quality prints.
17. Know your selections: Everyone knows selections, right? But how well do you really know them? In this tutorial, we get tricky with some awkward images.
18. Creative text with Gimp: You can do more with text than you might think, as our graphics guru demonstrates.