There are three basic steps to building a topic list for Wikipedia: the first is to search Wikipedia to make sure it doesn't already have a list on the subject. The second step is to hunt down every word you can find on the subject, from your own memory, books, web directories, dictionaries, etc. Surround each term with double square brackets, and save the page.
Because Wikipedia has become so extensive, don't be surprised if most or even all of the links turn out blue (those are live links, each leading to an article on Wikipedia). Dead-end links are red, but don't remove them, because they show what articles Wikipedia is missing — anyone can click on a red link to create an article on that topic. The third step is checking each live article in the list for links to related topics. When you find one, add it to the list.
The term "WikiProject" is used for projects created for the purpose of managing a specific family of information within Wikipedia. For example, Wikipedia:WikiProject Economics organises articles related to Economics, including economic terms, theories, and economists.
A WikiProject is a resource to help coordinate and organize article writing. Its attached talk page is a convenient forum for those interested in a particular project. WikiProjects can also have associated Portals.
Some projects, like the Tip of the day project, coordinate internal Wikipedia processes rather than article content directly (though not all of these use the term "WikiProject").
