I am thinking of buying a PC. Any suggestions on what I should buy? I already have a monitor. I only have $300-$600 to spend. What should I get? I've seen some nice ones at my Best Buy. But I'm not really a computer guy.
If you can handle a small screwdriver and follow instructions, you can build your own. I'm about to assemble one for my wife; I chose an AMD A6 chip (this is the newest one. It has a quad core CPU and DX-11 GPU on the same dye. So you don't need a video card). I got the A6, a Gigabyte A75M-D2H Micro-ATX mother board, and 8gigs of Mushkin Enhanced DDR3 ram for $210 as a bundle from Newegg. A 500 gig SATA 6.0 Hdd is around $80. Power supply around $100 (I got an 850 watt unit; never run near the limit on a supply, the heat it generates will shorten its life, and maybe the life of other components as well) That I found at Pricewatch. You can spend as little as $40 of as much as a couple grand on a case, depending on size and manufacturer. A bluray/dvd player drive is around $50 for one with a good rep; you can get cheaper, though.
I haven't had a chance to actually stress test this rig, but if the specs hold, you'd have a beast that could eat anything out there alive (with the possible exception of the extreme high end shooters.......and apparently the A6 will partner with a Radeon 6000 series graphic card for a crossfire configuration, if you need it).
Learn to build your own; you will get a lot more bang for your buck than anything you could buy pre-made.
Oh, and add the cost of Win 7 personal to that. Gotta have an OS, and that should do it. I'd go for the middle version, just to have access to more features.......