If you're anything like me you began using A Greek-English Lexicon of the New Testament and Other Christian Literature (BDAG) without stopping to think about how actually to use it. Sure, you can use it to find a reliable gloss but there is a wealth of information in there that you are not tapping into. Rodney Decker has written (back in 2003) an extremely helpful essay giving a brief history of lexicography and BDAG along with an extensive analysis of how to actually use the lexicon. This is one essay that I wish I would have read in my first semester of Greek.
HT: Danny Zacharias