Literature
Starting in Digital Art
When going digital, and going completely digital, You have to keep in mind that it can get really pricey. However, there are a lot of competing companies, and so different softwares have many perks, downfalls, and of course vary in prices. not to mention you need good equipment For digital art, otherwise you could lose hours worth of work to one error message!
Here are some useful tools to use when working with Digital Art:
Hardware
There are many kinds of programs to use, like Adobe Photoshop (~20 USD per month), Paint Tool SAI(~5400 JPY), Manga Studio(~210 USD), and Open Canvas (~60 USD), to list the pricier ones, Krita, GIM