What Sam said is pretty good. I’d say the biggest factor is what exactly are you planning on doing with it?
If you just need Word and internet, then I’d recommend an i3 processor and 4GB of RAM.
For Photoshop or other more intensive programs, go with an i5 processor and 8GB of RAM.
Hard drive space is up to you, and I don’t recommend paying extra for fancy graphics.
Don’t worry if you don’t know what that means; it’s usually listed fairly prominently on computer websites.
If you don’t care about how thin it is or how fancy it looks, you can find something with those specs for fairly cheap.
Oh, and HP and Dell are good brands.
I hope that helps!
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