I'm 18, an undergraduate biochemistry undergrad student. I have a great fascination with neuroscience, but it's just such a broad, overwhelming field that I have no clue how to really start learning. I've read up on various subjects from hundreds of websites, but I don't know how to get a good foundation knowledge to be able to fully comprehend journal articles and be able to enhance my knowledge from there. My particular interests are in neuropharmacology, affective neuroscience, and motivation/reward. Any advice would be greatly appreciated.

Well I may need advice just like you..

but here is a helpful interesting publication for "psycho-neuro-pharmacology" wish this helps
http://www.acnp.org/default.aspx?Page=Publications

also this is an interesting one
http://ocw.mit.edu/OcwWeb/Brain-and-Cognit...ences/index.htm

Start with the simple and move to the complex. Get knowing the basics of neuroscience and move into more specialized fields later. So start by getting a good understanding of how the brain works and go from there. You need to know how neurons work, the various areas of the brain, yada yada yada.

http://brainmeta.com/forum/index.php?showtopic=6433

I am in the same position, and I have found that attempting to plow through any neuroscience book no matter how basic, does not work without a solid backround in chemistry.

BTW great links! I am so glad MIT put all of their courses online~