I was about to recommend mine, but I doubt it's that available second-hand, since it's a fairly recent model. Still, to give you an idea of some factors that lead to what you're looking for:
Widescreen may be what you seek. Both my best friend and I have widescreen laptops (my choice was influenced by liking hers); the reason this Makes A Big Difference, more than just extra screen space, which is nice, is that a widescreen laptop has wide enough room for a proper keyboard. Both our laptops have all the buttons, including a full and proper numeric keypad. (Which matters to me; I like having proper, relatively dedicated home/end/PgUp/PgDn keys available.)
Current models of my laptop (this one is an Asus M50Vm/Vc series) have nifty trackpads which, if you tap the corner, convert it into a media control pad, with buttons for driving your media software, where my friend's, which is a late-2007-I-think Dell, has a row of buttons on the front edge for that. (One like hers may be exactly what you're looking for, actually - I think it would fit all your requirements, and it's old enough that they may be available for lower prices. I'm not near it at the moment so I can't tell you anything beyond "It's a Dell and it's white", sadly. Also, hers has Very Good battery life, mine has mediocre battery life.)
Mine also has a fingerprint scanner and the ability to recognise faces via webcam as an ultra-easy way to log in to your profile, but these are not features I would call necessary, just fun.
Both have trackpads, with separate buttons. Mine has it slightly offset to the left, so it's placed correctly relative to the home keys, not centrally to the keyboard-as-a-whole, which I love, because I don't hit it accidentally. I'm not sure about hers.
Mostly, though, I really, really can't recommend widescreen enough. It makes your laptop heavier and bigger (a guy at uni recently commented that mine is the hugest laptop he's ever seen), but it gives you the full keyboard and a nice, roomy screen. I think it's worth the extra weight (and hey, carrying it is good exercise...) when your laptop is your primary/only computer.
Mine isn't technically the only computer I own, but my desktop is at my parents' house and hasn't even been plugged in for some months now.
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Widescreen may be what you seek. Both my best friend and I have widescreen laptops (my choice was influenced by liking hers); the reason this Makes A Big Difference, more than just extra screen space, which is nice, is that a widescreen laptop has wide enough room for a proper keyboard. Both our laptops have all the buttons, including a full and proper numeric keypad. (Which matters to me; I like having proper, relatively dedicated home/end/PgUp/PgDn keys available.)
Current models of my laptop (this one is an Asus M50Vm/Vc series) have nifty trackpads which, if you tap the corner, convert it into a media control pad, with buttons for driving your media software, where my friend's, which is a late-2007-I-think Dell, has a row of buttons on the front edge for that. (One like hers may be exactly what you're looking for, actually - I think it would fit all your requirements, and it's old enough that they may be available for lower prices. I'm not near it at the moment so I can't tell you anything beyond "It's a Dell and it's white", sadly. Also, hers has Very Good battery life, mine has mediocre battery life.)
Mine also has a fingerprint scanner and the ability to recognise faces via webcam as an ultra-easy way to log in to your profile, but these are not features I would call necessary, just fun.
Both have trackpads, with separate buttons. Mine has it slightly offset to the left, so it's placed correctly relative to the home keys, not centrally to the keyboard-as-a-whole, which I love, because I don't hit it accidentally. I'm not sure about hers.
Mostly, though, I really, really can't recommend widescreen enough. It makes your laptop heavier and bigger (a guy at uni recently commented that mine is the hugest laptop he's ever seen), but it gives you the full keyboard and a nice, roomy screen. I think it's worth the extra weight (and hey, carrying it is good exercise...) when your laptop is your primary/only computer.
Mine isn't technically the only computer I own, but my desktop is at my parents' house and hasn't even been plugged in for some months now.