This guide will teach you how to draw digital art with Photoshop, Illustrator, and modelling software. Don't start to learn digital painting without it!
Five Stars - A Great tutorial using illustrator to turn sketches into digital vectors and editing them
How To Install & Use Photoshop Brushes To Create Digital Art - PinkPot
Buy Double Exposure Photoshop Action by Eugene-design on GraphicRiver. Double Exposure Action – a great tool for a photographer or designer.