You mean this one? Polyform Super Sculpey Firm Oven Bake Clay, Gray, 1lb https://www.amazon.com/dp/B001C4RTP2/ref=cm_sw_r_cp_api_glt_fabc_57SNA4N7F071KSMJYS1X Personally i prefer the medium over the firm but probably because i have weak fingers lol
Firm Super Sculpey and regular acrylic paints.
you'll want to build an armature
https://www.youtube.com/watch?v=6rMqFlxggr4
you use armature wire: http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=armature+wire
and some super sculpey firm (firm is better for detailing than regular super sculpey) : http://www.amazon.com/Polyform-Super-Sculpey-Firm-Oven/dp/B001C4RTP2/ref=sr_1_1?ie=UTF8&qid=1453821788&sr=8-1&keywords=super+sculpey+firm