italians in Libyia

Can anyone help me find out more about the Italian colonization of Libyia under Mussolini? I am especially interested to know how the ordinary Italian people who went there came to do so and what life was like for them whilst they were there. When England took Libyia after the war the italians had to make a pretty hasty exit. I would like to know how this was facilitated. Why did they return as refugees having gone there to carry out Mussoini's wishes in the first place?