Trying to model something, dont know were to start

i am trying to model “the amp” from infamous 2 and have no idea were to start
here are some pictures

http://www.tldrgamer.com/wp-content/uploads/2010/08/infamous24.jpg
if someone could make a tutorial that’d be great
thanks in advance

I would start from laying out the three main cylinder bodies. Mirror modifier should work ok for modeling as well.