what is the best type of model for character animation? what are the advantages and disadvantages of polygons and subdivisions? can i use subdivision for animation.

first question: what? i don't get what you just asked

second question: it depends on what your modelling

third question: yes. you can animate anything.

note: i'm well aware that my answers probably aren't the answers you were looking for
you asked a really broad set of questions that requires pages of explanation to get the answers you're actually looking for
so i'm guessing that's why no one has answered your questions yet

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that's a "Ch" pronounced as a "K"

Computer skills I should have:
Objective C, C#, Java, MEL. Python, C++, XML, JavaScript, XSLT, HTML, SQL, CSS, FXScript, Clips, SOAR, ActionScript, OpenGL, DirectX
Maya, XSI, Photoshop, AfterEffects, Motion, Illustrator, Flash, Swift3D

Thanks Chirone...and sorry for not making my questions clear enough... my first question means which one is the best: nurbs, poly or subdivs for animation..

you've answered my questions just as i wanted. thanks...

If you want to do character modeling then polys is the general method to go with, pretty much polys all the way really

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"No pressure, no diamonds" Thomas Carlyle