You need an idea. When I first started out, I didn't know what to do nor make. All I knew was I wanted to be rich. I now have an idea and I'm paying a lot to get it made. What I mean by that is you should know what type of site you want to make. Plan a bit. What type of hosting (free (if you want low downtime), shared, vps, or dedicated), the name, concept, etc.)
If you got that we can help.