Originally posted by SpartanD63 IMHO, if it has Windows 8 on it, I tend to immediately look up how well Linux works on it. Wait... I do that already.
Anyway, if you want something that is user-friendly, and don't plan to use Linux (or BSD, etc.) skip anything with Windows 8.
Linux is a great OS for many applications, but honestly I don't know how anyone can use it for serious photo work - especially if they're printing. In fact, this is why I stopped using Linux on my desktop.
I use both Mac OS and Windows now. Windows 8 is a good overall choice - especially for a laptop because it's more efficient than Windows 7. It will take you a little while to adjust to Windows, so try to buy it at least a month ahead of time.
Does this photo project pay you any money, or further your academic career or proposed occupation? If so, maybe you can convince your parents to help pay for it - especially if you're graduating middle school this year or otherwise could use it for school the next year or two. After all the one who does the work deserves to get paid, and the tools are necessary to get the job done. But there's also much virtue and value in figuring out how to make it work on limited resources.
So if you can afford it the MacBook Air is awfully good - especially if you can get the 8GB version. IIRC Mac notebooks usually get updated about the time you need to buy one - perhaps you could even get a refurb model. But if you go with Windows keep in mind that the cheaper AMD processors with integrated graphics (such as the E-300) have relatively slow CPUs for photo editing, while the better AMD processors (such as the A10) are quite good. So at least look at a better model.
Although my desktop is up to date, for laptops I currently have an early 2008 MacBook Pro 17" that I got last year for a great price, and an ~2006 Lenovo T60p that I got 2-3 years ago refurbished from Lenovo. Each cost me less than $500.
http://outlet.lenovo.com/SEUILibrary/controller/e/outlet_us/LenovoPortal/en_.../?page-index=1
I think it would be worth shopping around a little.
EDIT:
You might want to look at this article on the "best budget laptop" which came out a few days ago, from one of the most reputable sites on the web:
http://www.anandtech.com/show/6880/best-budget-laptops-april-2013
Also, I agree that the display matters a lot and you'll be compromising here on most laptops - I just don't know whether you can afford to worry about it on your budget, so I didn't bring it up. If you'll be editing photos on it, what you should do in any case is get or borrow a ColorMunki Display or i1 Display Pro and calibrate your display with it. You could also get something like a used Spyder 3, but it's not nearly as good.