Double Click DFP vs Google Adsense

DFP for Small business, and publishers.

I watched the video, I'm guessing its a more advanced version of ADSENSE.  However it wants me to log in with ADSENSE, and then I must enter the name it will send a check to??  This is already in adsense?  

What the Hell is DFP, and will it mess up my ADSENSE Account?

Then there is http://www.google.com/affiliatenetwork/  the affiliate network program.    IS this part of ADsense?

i'm completely lost.   Also in adsense I have 1 website, added, and youtube.

Hosted AdSense for Content =  Youtube  ,  I have no clue what videos people are watching to click the ads.


Adsense for Content = My web pages.  


Also in this bloggger I'm assuming its tied to my "adsense for content"  however how do I know where I'm getting money for clicks from?  Is it from my webpage or blogger?  This thing I've set up?  Are the adds on the top and bottom making me any money, or is anyone clicking them?   I'm lost in the dumb interface? 





-------------3 unknown things---All I'm using is adsense what the heck are the other 2 dfp and affiliate?---

-------ok I'm making more progress------
http://adsense.blogspot.com/   is info on adsense...

http://www.youtube.com/user/InsideAdSense#p/u  this is their youtube channel.

---Conclusion so far------

Don't run dfp.  it needs code changed in adsense.. And I'm still lost in using adsense and knowing if my website or sites are monitized.

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https://www.google.com/dfp     

www.google.com/adsense

http://www.google.com/affiliatenetwork/