hi! on top of the aff page you will find a black bar, which has the buttons of feed, stories, blog, etc. on the left, and some icons on the right. press the word 'stories' and on that page you will find the bar 'write new story.' just click on that.
aff is the most convenient and organized site to post a fiction (for me), that's why i only use this site to post my works.
moreover, you will see the icons on the right (the envelope, the two people, a i don't know, and a globe). when those icons become red, that means you have notifications on them. when the envelope goes red that means you have a new private message. when the people go red that means you have a new friend request, like that.

i hope i've helped. don't hesitate to ask me for assistance :)

Hi~ Nice to meet you.

Hi, i've been here for a while (and also write) and would love to help if you need anything^^
Just PM me, I'm always looking for someone to help or talk to :)
xx

hey there
i'm indonesian too