Tubby,
I wouldn't pay too much attention to some of the clowns in the first row. From my perspective as a mechanic, I'd prefer that more pilots saw fit to delve deeper into the airplane systems and maintenance. From my perspective as a pilot, I'd prefer that morepilots saw fit to delve deeper into the airplane systems and maintenance.
The sources already provided you will work fine. However, as others have stated, it's hard to get much just from the raw AD's or SB's. Additionally, while AD's are mandatory, SB's aren't, and can represent everything from the mundant to the optional to the necessary that will eventually become an AD. Without the ability to compare it to a mx manual and to equipment that's installed on a specific aircraft, and verify the effectivity (applicability) of the AD or SB to the aircraft, airframe, component, appliance, or part, then just seeing the AD doesn't do you much good. First, you need to find out which ones apply, and that usually doesn't come from simply viewing the AD.