In reply to JD84:
My personal recommendations are:
Get some level of solid state drive (SSD /SSHD - Solid State Hybrid Drive, a big hard drive with a small SSD in addition) - no longer the useless things they used to be, they are now a solid addition to any computer (if you pardon the pun :P). They are faster than your hard drive and store your OS and some of your most used programmes so that they are quicker to load up etc. They can cost a premium compared to HDD space, particularly on a large SSD, but generally an SSHD is only marginally more expensive and worth every penny!.
Bigger isn't always better!! - Do you really want a 17" laptop? My work laptop is a 13" and although I was sceptical at first, I now wouldn't get a big one again, it's so much lighter (1.4kg), I can fit it in just about any bag (which has the added advantages of being able to travel carry-on only and not carrying that obvious laptop bag to advertise to potential thieves) and also the battery life is far greater. You may not necessarily want a 13" because they can actually cost more than a larger one but even a 15" may be better for you.
Not necessarily for you but: Processor, processor, processor - depending on what you want to do with it, get the best processor you can, loads of folk end up having masses of RAM with a shitty processor and it just gets bottlenecked by the processor. However if you're just wanting one for general things like browsing the web and word then you don't really need to worry about it too much.
These are just my personal recommendations and as has been said umpteen times already, an idea of a budget is would be needed to recommend specific laptops.
I'm happy to answer any questions you may have as regards what I've said or about computers in general.