So I was trying to remove some stuff to make more room and notice my harddrive is mostly occupied by "Other". What on my computer is considered "Other" this was I can remove it and free up space.
Part of the "other" is your sleepimage - the size of this file will be the same size as the amount of RAM you have. So if you have anything over 8 GB, the image will be pretty big. You can remove the image (and prevent its creation) with no ill-effects if you want. Its only purpose is to save your system's state right before the battery is completely depleted.
Here is the command to remove the sleep file (it will be created again automatically when your computer is put/goes to sleep):
FYI you're talking about an issue with what's generally referred to as "storage." "Memory" usually refers to the RAM while "storage" refers to the hard drive.