If you have Windows (you probably do) go to Start>My computer (or just computer) and right-click the 1st device that comes up and click properties. Where it says capacity it should say how many Gigabytes (or GB) your hard drive is.
No.
No, new harddrives are worth about $50 and a new laptop is $500 - $2000
What do u mean "how big".
Yes It will as its a sata interface :)
512 MB with SD Card functionality.
Yes.
yes as long as its compatible with your proccesor and fits you need to check your dimesions. but i'd just recommend an external hardrive preferable a Western Digital WD Passport WDXMS1200 External Hard Drive
Yes you will need to get a usb connector and software to recovery all the files on your hardrive and transfer them to another computer. Next time make sure you have everything backed up on another hardrive.
What is the purpose of a hardrive
Since you are a graphic design major you will need a very powerful laptop. So look for one that has a good video card, alot of memory, a fast processor and a large hardrive.
No
the hardrive the hardrive