Not sure how to setup my server

hi i played on lots of servers and it came to i was just fed up with the amount of hackers and bad admins so if you want some thing right do it your self so i baught a server from gameservers.com. Im not sure on how to set it up add plugins and costomise them to my liking do add me on steam as im not on here alot my name is ⓅⓡⓞⒽⓤⓝⓣⓔⓡ pic is the shield logo that is used for my clan

 

Well you showed us that your name is: http://screenshot.sh/ovYvSz0l1pRis .....
Go to your server panel.
Then search for the label which says "mods"
Press the install button near the Oxide2. Done