12-09-2015, 01:56 PM
I'm sure more established members can give you excellent recs but one place to start might be the Osprey Book series "Rome's Enemies"...i find their books really informative and the art's very solid! good luck
https://ospreypublishing.com/rome-039-s-enemies-1-pb
https://ospreypublishing.com/rome-039-s-enemies-1-pb