To make a website you need a software I would recemend www.webs.com, wetpaint or for wikis of coarse WIKIA. You must have a topic and sub topics in yor website or wiki.
1. Register with the web maker and choose a good password. 2. There should be an edit button us this and type text into text box. 3. If you are on wetpaint you can go to wetpaint central, this will give you some good ideas and there is a forum for if you get stuck. 4. Explore but remember to check spelling and always think about what you put on your site. Try to think Is the thing or text i am putting on the site not going to offend people or be unsuitable.
ALWAYS have an idea of what you want on your site. Try to put a 100% effort into it and keep checking statistics and other site data.