I'll give you some tips.
The AR15 like to run wet. Very wet. So lube it everywhere. You see the two holes on the side of the BCG. Spray oil into it. Spray oil into the charging handle. Spray oil everywhere.
I use grease but it's really messy. You might not like it but it works very well.
http://www.ar15.com/content/swat/keepitrunning.pdf
Get yourself Magpul anti-tilt (Enhanced) followers. This will improve your magazine performance.
http://www.imfdb.org/forum/newreply....quote=1&p=3174
You probably will not take combat carbine classes anytime soon. I suggest you buy Magpul DVD video or something similar to it. It teach you the fundamentals, which is the most important part in shooting.
http://www.bravocompanyusa.com/Magpu...d%20dyn001.htm
Feel free to ask any AR15 questions. I have 6 complete lowers built. 4 uppers. Waiting for parts to arrive to built another two uppers. I also have tons of strip lowers.