i need a little help here :D

hey, so being the retard i am, and not knowing how to use mibba that well, i was wondering, how do i create a link in my stories?
cause sometimes i wanna show some images that may help the reader know more or less how i imagine the characters of my stories or how they are dressed up, but i don't know how to create the link :D
i would realy appreciate some help, so if someone knows, please please PLEASE help me :) i know, i'm kind of a dork with this stuff. so yeah, please tell me how :)
thaaaanks!