We've got a nice thread about choosing a laptop. It's the first thread in this forum and very helpful. This is the link:
And, yes, the OS matters. You have to choose between Mac OS (only on Macs), Windows and Linux. Windows for new laptops will be Windows 7 till the end of October. From then on you'll see a lot of Windows 8 laptops, but on any Windows 7 device you buy now you can buy a Windows 8 upgrade for $15.
If entertainment is heavy gaming, you'll need a gaming laptop (expensive, short-lived). If it's viewing youtube and streaming TV any current laptop will do.
I need some help finding a laptop. I will use it mostly for homework and entertainment. I'd prefer if it has about 4GB+ RAM, a reasonable amount of HD space (I don't usually save songs/pictures etc on my machine..), and is around $600 or under. I don't really care what OS it is (does the OS really matter?) I don't really know much about what other specs I'd like.
So I'm wondering if someone will tell me where I should be looking/what I should be looking for.....