An extremely helpful study aid is a free Bible (and concordances, dictionaries, etc...) program called E-Sword.
Go to e-sword.net to get it , it is awesome, the best there is imho .
God does not contradict Himself in his word, what you have experienced is people taking verses out of context, ignoring the other verses before and after it. You are right, there are some who can make it say anything they want to those who wont take the time to read it themselves.... Blind leading the blind, Ear ticklers and such.....
Best way to Study His word is by yourself with an open mind to His leading and prayerful meditation on it.
I have come to the point where I listen to no man anymore when it comes to the Bible. I search it for myself with the author!
Leave me alone... and I will leave you alone....
Don't poke a wolverine with a sharp stick unless you want your balls ripped off.
Don't start nuthin, wont be nuthin.....