Did you catch the epiphany of the last post? A digital tablet lets you draw using the skills you got. It don't do nutt'n to make you an artist. That being said I do recommend you newbe want-to-be digital artist in the making to get some traditional art lessons. If you start out with nutt'n, you'll have nutt'n to work with but hard knocks or knuckles.
We are going backwards because hindsight is a mug. So not to baby you get your Google (or Yahoo ) skills and get "The Complete Book of Drawing Techniques by Peter Stanyer". You can get a free PDF download or a print book via Amazon. It is an Bauhaus art course, it is the basic stuff, can't go wrong.
Then get "Digital Foundations" art course. You have to look around, it comes in two version as far as I can tell. An Adobe Creative Suite version and a FOSS (Free Open Source Software) version. I downloaded the FOSS version as a free PDF. Now this book is the same as The Complete Book of Drawing Techniques but integrates using Photoshop (Adobe) or GIMP (Open Source) softwares. I am a GIMP user.
Now you got two related reference books and you can get an art tutor, art teacher or artist mentor to keep you to task. The point is artistry requires some training to get the mental mind set, mechanical hand-eye sync. To get the basic instruction in "natural media" is the big leg up, then once you figure out how to use the PC hardware and software there is a skills transfer that happens. I can slide lead, roll ink, smear paint and now push pixels. It's the same but different.
Comparing peas to beans, you learn using a steel sword then move to the light saber. Same skills but man, what a rush!!