This is not an easy question.
First,
you have to study middle-game of course.If you don't know what to do on , let's say , isolated pawn cases , don't expect any opening to teach you.
Second ,
you have to understand the pawn structure of your openings.Many times that can save you from a lot of aimless study.
Can you make it more specific?What openings interest you?
With some openings you need to know lines and study games is not enough or is not so useful.Other openings are based on understanding , knowing a few lines and studying games can create excellent results
I hear all the time to look over games from the opening you want to learn to know the right plans and ideas. My question is how does one find a place to study these games and how does one narrow the search down?
Once I have found this place and gotten the games that I want to play over, then what are some of the ways to study them?
This is from someone who does not know the ECO codes for any openings.
Thanks for your help in my quest to master my openings.
*EDIT*
I have tried to use the game explorer but that is more of tree than an actual way to study a game IMHO. I am looking for alternatives to this. Thanks.
*EDIT 2*
If you feel a need to look at games of mine before giving a comment, look at my blog here, http://blog.chess.com/chesswithmeaning, as these are my OTB games that I actually take time to think as opposed to online games here.