For example the graffiti writers handbook "Get Up Stay Up" which imparts basics for every mission, with solid advices on how to keep a low profile during night time bombing runs, selecting proper clothing, and finding the right paint and caps to pull off tight graffiti pieces.
Also new is "Subway Art" by Martha Cooper and Henry Chalfant, probably the most influential graffiti book of all time. In the 70s- when graffiti was still in its infancy - the authors obtained access to the New York graffiti scene. Documenting what they found, they then presented their findings to the world in 1984. 30 years later, the two have decided to reissue the classic, which was seen as a Bible for an entire generation of painters.
And to apply your learned knowledge we have new markers from On the Run and several new cans, from very small to very big, from Montana Cans, MTN - Montana Colors and Kobra paint.
Check: www.fireandflames.com/en/graffiti.html