Simple help with my new site

Hey guys. Me and my friends just created the site program-net.com First off, I have to apologize if this is a dumb question, this is the first experience in creating a webpage/blog.

Anyways, if you go to the site and read the couple of test
posts I’ve made, at the end it says:

posted in Lifestyle | Edit | 1 Comment…

thats fine and all, but how do I make it so it says it was posted by me? There are going to be about 10 writers for the site and I want it to know who wrote the post. Thanks, I hope that made sense!