Your original camp should provide I think 5 Land Claim Papers, which gets you started. If you are all alone then you don't need to worry about others taking your stuff so go explore the server for locations that can work to grow and become a city. Some might start around a coal mine while others might look for limestone or sandstone. A place near a forest or where the forest, grasslands and desert overlap might be good, as the land might be flat and you have several different biomes for resources.
Once you've found a spot, claim it using the LCPs you have. You can change the name of it on the deed. And that's how you start from nothing. As soon as you can, make a research table and start researching skills so you can get the books; learning a page from each will get you another 5 LCPs each. Those books can supply an infinite number of pages for others so you can offer them free to others who might join you as an incentive.
Hope that helps!