There is 3 types of memory that you'll see mainly. RAM is the memory that the computer uses to run and usually amounts to 4-32 Gigabytes (GB) with 6-8GB being good for a laptop. The other memory is storage memory, what you'll use to store files and where all the programs from Windows to your writings are. Of these there are 2 types. Internal and External. Internal is memory that is actually inside the computer, either on a flash memory(SSD) or Hard drive(HDD). This is where windows is kept, it being needed inside inorder to boot up. External is an outside source of extra memory that will plug into the laptop, either an external HDD or something like a SD card or USB flash drive. 1 Terabyte (1TB) is pretty good sized and will take a while to fill, even with lots of music, photo's or written files.