For the prototype there isn't much to instruct. I use a cheap China prototype-shield with a fitting bread-board. The only connections are from the shield to the board and documented in the Arduino sketch pinMap.h file.

For the prototype the power pin has to be set manually (pin 14 or pin 16). The Arduino Mega 2560 shield has automatic power switching for several common power pins; 14, 16, 20, 24, 28. Ground is always half that; 7, 8, 10, 12, 14.