Register yourself on the Autodesk website as a student so you can download anything you want from their site. NOTE, not for production ( company ) wise and profit.
Note you must get 3D Studio Max 2011 from "somewhere else" cause it does not present itself anymore to be downloaded from the official site.
The 3D Max key you get from any version will work in any version before.
Get Mudbox, 3DS Max, for sculpting, modeling and retopology.
Download the SC2 Art Tools (only working for 2011)
Get a drawing program like PhotoShop
Check the DOTA2 Workshop to learn to texture (on an easy an quick way) like they did in HotS
Download my import scripts ( see my assets ) so you can import HotS, SC2 and War3-SC2 models into 3D Studio Max
Check my tutorials to get 3D Studio Max ready to start modelling and animating
I personally do not like Blender, it is very chaotic and does not have the necessary stable tools to do what Blizzard does.
Any other questions, don't hesitate to PM me