Just came across a fantastic GLM introduction lecture that explains the "what they mean" logic wholistically.
Check it out here:
http://youtu.be/HXTeJfIQXUc
And in fact, here's links to all of Ray Cooksey's uploads:
https://www.youtube.com/user/RayCooksey/videos?view=0&sort=dd&shelf_id=0
And in fact, here's links to all of Ray Cooksey's uploads:
https://www.youtube.com/user/RayCooksey/videos?view=0&sort=dd&shelf_id=0