That's a big question.  You have something specific in mind or a reason to know what your asking about?  This is beyond the scope of most architects that's why we have structural engineers. If you have questions/concerns bring out your engineer that's why you pay them.

Over time you will learn whats a concern and whats not.  Even then you should have the engineer look it over if your adding load to a structure it wasn't designed to hold.  

Is this what you want? ASTM Structural Steel Design http://www.amazon.com/Structural-Steel-Designers-Handbook-Brockenbrough/dp/0071666664

^oops, that isn't ASTM, it is a design handbook. 

The logical place to start are the bookstores of your local university - go to the engineering course section.  Steel is much more straight forward than concrete.  Chances are you don't want the liability, but it is helpful to be able to converse with your engineers constructively.

Thanks tints. That works for now. expensive book.

I was kinda looking for a architects handbook to steel detailing. Almost like Graphic Standards but with all details in steel and concrete.

Many people dedicate their entire careers to these topics as engineers. You could try to network through consultants to hook up with some engineers that you could talk to about these things with. You could try getting a job that works more closely with engineers or consultants to pick up some of this knowledge. 

Ifd you do buy an ASTM or ACI book, I would be careful, as you want to know conceptually how these details are made, but unless you are a PE and can do the calculations , I would not specify welds or rebar size or anchor embedment, or anything that should be in the engineer's scope.