First Time PC Building Help Please!!

Hello all! This is my first self-built computer.

Approximate Purchase Date: the sooner the better

Budget Range: 600

System Usage from Most to Least Important: gaming, school, military training

Are you buying a monitor: Yes

Parts to Upgrade: building from scratch

Do you need to buy OS: No

Preferred Website(s) for Parts: newegg, amazon

Location: ft. drum, ny usa

Parts Preferences: none

Overclocking: no

SLI or Crossfire: no

Your Monitor Resolution: 1440x900

Additional Comments: I want it to last a long time so its a worthwhile investment. I tend to stick to games such as League of Legends and the currently awesome MMORPG, at this time Guild Wars 2. So I'm looking for at least 60 fps on max settings for League of Legends as my Acer Aspire 5745g can at least do that. Also I'm looking for it to be able to run guild wars 2 WvW without the current lag state i receive which is equivalent to hit key cast 12 hours later when the 30+ players are gone and you are left dead.


Why Are You Upgrading: Need a second computer, laptop doesn't cut it in wvw and overheats really quickly