Software to begin with
The software that you shouldbegin with is Adobe Photoshop and Sketchbook Pro.
Sketchbook pro is light and easy to use. It lets you draw with the digital pen that feels like a real pen. It is also available on various platforms. It never crashes or bugs.
AdobePhotoshop offers flexibility and an awesomeperformance. It offers you a great choice of patterns and brushes and you can do basically anything with it.It is a little overwhelming but it can be mastered to render the drawings. Sketchbook Pro,however, lets you boost your confidence.