Hello Julius,
if you are a beginner then you have to follow everything said and as always search and ask a lot
first of all you must be patient and working step by step and always take a back up, write down your notices and thing need to get fixed.
i think its better to learn some useful programming languages like PHP, HTML and learn more about SQL Databases management..
and by the way you can not get the job done within your first experience many many bugs and fixes you should know already because you will face a huge amount of them while making your server.. and let me tell you what, most of them are database bugs.. which means you have to look for some server files with no bugs at all and this is kinda impossible because most of DEVs now release the files full of things need to be fixed due to time or copy right i dont know..
any way good luck mate i hope i could help you even if my reply is totally disappointing :P
i feel i m talking like a boss or professional programmer hah i am a newbie guys