Hi, everyone! I want to ask a questions about what hardwares and sofewares should I need to develop a game? and is there any free softwares can i use?

let's see... you need a computer(the hardware really doesn't matter) and a compiler and linker, or an interpreter(I suggest you learn C++, Java or Python), and there are thousands of free programs that can be used to make games

You'll need a compiler/linker and since you seem to be kind of new to this, an IDE (integrated development environment) that makes things easier for you to deal with.

I'd suggest you take a look at DevC++:
http://www.bloodshed.net/dev/

Alo you will have to use an application for creating visual arts. One which is free and has got pretty much tutorials out there is The GIMP:
http://www.gimp.org/

Next you might consider getting into 3D characters, objects, etc... consider using Blender3D:
http://www.blender3d.com

You will need plenty of other toolsets and you will definitly find everything you need on the net, just google for it. It's out there, waiting for you...

One hint though: Coding for the windows platform, you'll probably stick to DirectX. If you want to be more general, try using SDL:
http://www.libsdl.org

Both and many other toolsets, APIs, etc, are available as so called devpaks for DevC++:
http://www.devpaks.org

Have fun coding,
T.