How to Draw: book overview

Here's the link to the iOS app:
https://itunes.apple.com/us/app/h2dr/id731368168?mt=8
Book here:
http://designstudiopress.com
http://www.amazon.com/gp/product/1933492732/ref=s9_psimh_gw_p14_d14_i1?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=12CSS5FJ279C82EAFY8J&pf_rd_t=101&pf_rd_p=1630083502&pf_rd_i=507846

Видео How to Draw: book overview канала Scott Robertson