It looks like most monitors are just monitors but some have built-in speakers and cameras. Are those typically worth paying attention to? If I got one with speakers, would I have to get a bunch of new cables to hook up both those ones and my old speakers?
And I don't really care about having everything super tiny either, I just want to be able to fit a lot of crap side by side. It's okay if that means everything's gonna be super tiny. I just don't know what the hardware limits are, like what the biggest possible screen resolutions are gonna be and whether they're substantially different based on screen size.
What is?
All these reviews talk about dead pixels, is that a common problem? Mine's crapped out by chemistry, not age, so I don't really understand why that would happen.
Again, in order:
Built-in speakers tend to suck, probably about on par with a $10 set of computer speakers. You would need some extra wiring for these. (Which might lead to a lack of wiring leading to your real speakers)
I don't have much experience with webcams, but I'd expect built-in cameras would be low-end when comparing to stand-alone ones. So might be a nice feature, but probably not worth paying much extra for.
Biggest screen resolutions you're going to find on anything in your price range is 1920x1200. From personal experience, I wouldn't go any lower than 1680x1050 for a primary monitor.
There isn't really any good measure of monitor quality without looking at the model in question. Any of the big brands (Dell, Samsung, ViewSonic, NEC, Asus, Acer, BenQ, LaCie, LG, etc.) should give you a reasonable chance of the monitor not starting to spew sparks after a week. If you're going with an off-brand, do your research first. (Or you know, post a link here, and get some other people to do your research for you)
Dead pixels are relatively uncommon, but can pretty much ruin a monitor. (ie. red pixel dead centre). I wouldn't pay extra for any dead-pixel guarantee, but if there were any pixels that bothered me, I'd return the monitor and eat the restocking fee.
How do dual monitor systems work anyways? Like do you have to have two OS's installed or something?
You need two monitor outputs, and then it just expands your desktop (in whichever direction you want.) By default, the Windows taskbar stays on your primary monitor, and you can drag Windows between the monitors. Maximizing a window maximizes it on the monitor it's in, not across both of them.