Posting ……please help i beg you I am seriously begging

I am trying to create a travel blog like my friends who is out of contact for another month or so. His posts are numbered Day 1 – Day 217 and when you log onto his post you see Day 1st.

On my blog I have only put in two posts but they go backwards. When you log on you see Day 2 first then you have to scroll down and see day 1. I have been gooogling, reading forums, and playing around in my dashboard as much as I can but I cant seem to figure out how to flip this ascending order around.

I want my blog to be able to read day 1- 217 not day 217 back down to day 1. That would be like reading a book backwards. Please I am about to cry.

I have no idea about codex, plugins or anything technical i just want to right about my upcoming thailand trip and i have no computer savy person to help me. Please please please tell me how to fix this i am in a frenzy.