So I had to install some plugins for Quartz Composer in the location user/username/library/quartz composer/.. in doing so I found that the mac directory is very confusing to me, for one thing, "library" is invisible by default. I don't know why that needs to be the case but i'd like to change it anyway. another thing is there are two libraries. there is HD/user/username/libraries & there is HD/library if anyone could explain the difference to me? or link me to documentation explaining that? and finally, the most confusing thing (why i attached an image) when i'm in HD/users/username/... there is my username again at the top. if I go to that folder it enters a recursive loop that extends 3 times and then seems to stop. what is up with that?