Hi @halim, welcome to the forums! 
You are most welcome to take Ragdoll for a spin, find a download here:
The currently best option for learning about Ragdoll is this introductory video here:
The above download will get you a 30-day trial, feel free to email me at marcus@ragdolldynamics.com for a studio-wide trial without the trial limitations. If you have any questions or would like more learning material, feel free to post a new thread on this forum.