I have been using art and rendering programs for about 10 years, but now I want to go the next step and do some modeling. Which program would the experts out there recommend for a beginner to learn?
From various offers and giveaways I have the following packages available: Amapi 5, Hexagon 2 and Shade (not sure which version, the one that came free with Poser 6). Which one of those should I learn? My budget is rather limited, so things like Lightwave, Maya, 3D Studio Max are out of the question.

From various offers and giveaways I have the following packages available: Amapi 5, Hexagon 2 and Shade (not sure which version, the one that came free with Poser 6). Which one of those should I learn? My budget is rather limited, so things like Lightwave, Maya, 3D Studio Max are out of the question.
