He's a quick learner. He always has been, all his teachers (and of course, Alfred) told him so. He just never applied himself. Never had the motivation.
Now? Here? Since that night he left Gotham... almost half a year ago? He has that. If he wasn't motivated, he'd have starved by now, or been locked up, dragged back to Gotham, shot and left to bleed out in a dirty alleyway... He's learning the how, the ins and outs of the criminal trade, every day. The why still eludes him, understanding, but he's sure, in time...
...if he has time. If he survives the night, an arms transaction gone bad, ending with half the ragtag gang he'd been adopted into dead and the rest of them scattered, racing down dark Chicago streets, hearing bullets ping against brick too too too close behind him.
He dives left, prays they were expecting right.