Bhagavad-Gita The 3-5 Teaching

Yeah! More reading! (that was heavy with sarcasm)
So what happens is...
Arjuna is confused by the long explanation Krishna gave him. Then Krishna has to give him a new long explanation about controlling senses and such, disciplining your actions, and...stuff. There was also something about evil things or people? I'm lost.
On the fourth teaching it talks about knowledge. So listen up people! You must listen to what I have to say next to become smarter!
So I have realized that they are both still at the battle talking about these things. Nowhere does it say they walked somewhere else to talk about these things more privately. This made me wonder with my great abilities and to come up with a possibility of what could happen to them from standing on the battle field. I know I should be thinking about symbolism and what they are actually saying but this thought overwhelmed the other two. I mean seriously. If you were standing on the battle field and the conches had already been blown to start the battle, wouldn't Arjuna and Krishna both be lying dead with an arrow stuck through their head? Since they're still alive at this point, they must have some magical force to shield them from being killed, because I don't know anyone who can just stand in the middle of distruction and killings only to not be killed. I thought this book was supposed to be about wisdom!
So anyways, in the fourth teaching they both end up talking about riencarnation once again and controlling your actions. I never knew there could ever be so many examples of the same thing. It's like everything just keeps being repeated. Only it's sad because I still can't seem to be getting this story. Maybe my mind isn't advanced enough to understand this kind of stuff.
In the fifth teaching, Arjuna wants to know which one is better, dicipline or renunciation. I personally would say dicipline because my sisters don't seem to know the meaning of the word. Maybe I could have Krishna come and explain it for them. Although I don't think they would even be able to sit through the first example of dicipline. Krishna would basically be coming to his own death sentence.
So it says in the passage, "The man of eternal renunciation is one who either hates nor desires," and another one says, "Men of dicipline reach the same place that philosephers attain." What??? There are several more examples of the two but it only made me the ever more puzzled.
So I'm reading, reading, reading, but to no success, do I find something to help me understand. It doesn't even say which one is better. I'm going to take a wild guess because it says, "The man of dicipline has joy, delight, and light within." It sounds happy and better.