I'm pretty busy right now, with my aliyah flight coming in four days. But most of what I do on this blog is regurgitating anyway, so it's no problem to regurgitate something from D.A.F. and Beit Midrash Beit Av (via Daf-Yomi.com).
The second chapter of Berakhot gets into the details of saying the Shema: its content, its structure, who says it, etc. In the course of discussion we find two understandings for what Shema is all about: accepting the yoke of Heaven and Torah study.