bschaff15, take a look at the ballpark ratings on offense in general, on singles (this tells you about how the park affects batting average generally, all other things being equal), doubles, triples and home runs (right and left field).
Notice that some parks - like the Astrodome, or Dodger Stadium, for example, clearly favor pitchers and make home runs very difficult. Others favor hitters like say Tiger Stadium, Wrigley, the Kingdome or especially Coors. Some are especially good for doubles hitters - the Polo Grounds say, and others for triples hitters (from memory here, so might be wrong) like Kauffman in Kansas City (wherever it was the Royals played on artificial grass - again I might be wrong about this one).
So you have several options:
1) pick a ball park and then draft based on that choice:
a) meaning you draft players - hitters whose strengths are augmented by that kind of park and pitchers whose weaknesses are not exacerbated by it - for example if you have pitchers that give up a lot of HRs MAYBE you want a low HR park, unless you are more concerned to get a lot of HR production out of your hitters, or you use a triples park for a speed-based team and you are safer with a HR pitcher - nothing is automatic here, or:
b) you draft to keep the other teams down by coordinating your ballpark with your pitching and defense - so maybe you don't get HR hitters, use a low HR park, have low HR pitchers and try to strangle offense and draft high defense players for the field
In other words, coordinating your ball park and your drafted team is not as straight-forward as it sounds, but in general, look at the characteristics of the ball park and its effect on offense of various kinds and try to draft hitters who strengths are not injured by that park or ideally are helped by some aspects of it, and pitchers who go well with it but in a combination that might also weaken strengths of your likely opponents.
There is about to be some change in pricing of players finally soon, but until then the tendency for years has been that most people Open Leagues get base stealing teams because power costs more and they get pitchers parks and deadball era pitchers. So HR teams are penalized.
I sometimes have some success and usually do not, but my approach since I don't like that kind of team and think triples should be banned altogether (:-)) is to use a park like the Kingdome or Tiger stadium, get HR/100 PA hitters and try to outscore them at home. As I say, usually not that effective, sometimes it is.
Finally, if you don't already know, go to the bottom of the Draft Center and change the setting to Advanced Stats.