Photoshop / Illustrator / Gimp
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This article is a compilation of the best Icon Design Tutorials, I think everyone will be able to learn something new from these tutorials. The title should have been 41 Amazing Photoshop and Illustrator Icon Design Tutorials and also not Forgetting the Single Gimp Icon Design Tutorial. (A little long, don’t you think).
42 Amazing Photoshop and Illustrator Icon Design Tutorials - Spe
50 Excellent Adobe Illustrator Video Tutorials - Smashing Magazi
Adobe Illustrator is the industry-standard when it comes to the creation of vector graphics. Though a very robust tool – the learning curve involved in mastering it can be high.
60+ Incredible Tutorials And Resources Collections For Designers
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Slight More Specific Graphics Tuts