Hey John, welcome to CGCookie! We do have a course specifically on 3d printing using Blender here 3D Printing on the Form 1+ . Usually when creating a highly detailed model people will start off sculpting as it gives them the most freedom to create the details they need. If this model were to be used in animation or games it may need to be made into a lower poly version.
If you’re like an introduction to sculpting I’d recommend getting started here, Fundamentals of Digital Sculpting. The Art of Sculpting is also a great series that I would watch once you understand the basics. Hope that helps, if you have any other questions let us know.
