Considering that you're new and that some users here have already tortured you enough with "Search" and "Read stickies" posts, I'll refrain from it (For now.
) and actually post something!
There are plenty of free and priced modeling softwares out there, 3DS Max, Maya, Lightwave, Cinema 4D and many more lives in the group of more higher priced ones and where you are standing I would say just stay away from them for a while, they won't give you any real advantage at your current stage from free softwares. The free popular softwares include Anim8or, Wings3D, Milkshape (Not free but damn close), Blender etc.
All of these are very doable as modeling softwares and you can go with either one and still be fine, but the one that I like to nag on about is Blender 3D (
http://www.blender.org), it's an open source cross platform 3D bundle that includes everything from modeling to animation to proper rendering engines, and has a ton of features to say the least, some people like to compare it to the more higher priced ones and I say that they have full right in doing so, all whilst being 100% free.
Now the issue that scares everyone away from Blender is the interface, it can be terrifying when you first look at it but as with anything, practice makes perfect, and you just need to go through a few tutorials (The Blender Noob-to-Pro wiki is very useful, I believe there is a beginner series from Blender underground that is very useful, Montage studio has some great ones etc. There are a whole ton of Blender resources out there just for you to open and consume!) and you'll know the software as the palm of your hand.
Basically, the only people who are scared of Blender are the people that just don't want to learn. It's an amazing piece of software engineering and it constantly keeps growing. Especially with the upcoming release of Blender 2.5, which will contain a complete UI re haul and quicker workspace, workflow enhancements etc. Basically they're completely re-writing Blender for 2.5, which I find amazing, especially considering all the new UI features and everything they're just jamming in there.
For modeling people, since you seem to be pretty new, stay away from it for a while, model more mechanical things (Guns are something that comes to mind, just because people seem to have so much love to them, but vehicles, furniture etc. are also just fine) and get used to your software and just modeling in general, and then move on to people.
Modeling organic things is very tricky, and generally takes a while to get your mind around, as it really needs some proper thinking and some skills as well, so modeling more mechanical things which at least at this early of a stage doesn't really require as much thinking (But later on they'll require just as much as organics, trust me.
) and will probably be the easiest for you to learn on now.
That would indeed be my advice. Hopefully it wasn't too lengthy.
Alucard94, lacking proper intelligence.