• Inspirational Illustrator Sites with Tutorials
• Jason Hoppe
• Jason Hoppe Spiral step-by-step tutorial
• 
• Jason Hoppe Rope step-by-step tutorial
• Become a master of isometric illustrations-3D effect - EXCELLENT
• Von Glitschka: Illustrator Master. Check out his YouTube Tutorials
• Von Glitschka on Instagram
• Everything Von Glitschka
• Astute Graphics: Great Illustrator plug-ins
• Watch Paul Trani, Senior Adobe Evangelist in his online stream,
  "No-Nonsense Tips in Illustrator. I watch everything he puts on the web.
• More Paul Trani: Caracatures in Illustrator
• Paul Trani: Creating 3D Isometric Art in Illustrator
• Paul Trani: the Transform Effect in Illustrator
• Von Glitschka's Monster Drawing Course
• Create a minimalist self-portrait in Illustrator (video + written instructions)

• Colorful Pattern Masking in Illustrator - EXCELLENT Tutorial
• Veerle's Tutorials - excellent stuff
• Tony Harmer 's You Tube Channel - This guy's videos are
  f-a-n-t-a-s-t-i-c
• 7 Principles of Icon Design