1D Rolf Benz Pouf on youtube

I have done next to no sculpting in Blender. Which Brush should I use to sculpt wrinkles like the one’s in the"1d Rolf Benz Pouf" on youtube. I did not link to the video on youtube because I don’t know if it is okay to do so. Is there a good tutorial on sculpting wrinkles in Blender anywhere on the internet and including cgcookie? Thanks

Why would it be not okay to give links to a tutorial?