Digi’s and/or Clip Art

So, I have a couple ideas I would like to turn in to digital stamps (digis) or clip art.  They have been sitting with me for a few months, and I am ready to sit down, and bring them into being. The problem?  I know nothing about making either….  Which is ‘better’? Which is easier?  Is it easier to draw them, and scan them into a program?  Or should I start from scratch and design them in the program? (I think I have just about everything but paint/photo shop.)  Any ideas, thoughts, tip,s tutorials, experiences of your own, or general guidance would be greatly appreciated…