Read EVERYTHING he writes.
This is NOT a joke.
Specifically, read Fantastic Four (now FF) and S.H.I.E.L.D., but above all else read Secret Warriors.
You don't know how to mix spies, super heroes and black ops until you've read this book.
If you don't own it, BUY it.
It shouldn't even be optional.
I'm going back to reading my 26 issues of Secret Warriors now. I'll be back later....