Every article on Wikipedia must prove notability—in other words, it’s up to you to demonstrate that your article belongs in the encyclopedia. To help your article pass the notability test, use a rule of three: Be sure to cite at least three reliable, published sources that are independent of your subject—i.e., no official websites or promotional material. If you can’t find at least three good sources, you may find it difficult to prove notability.
Portals serve as enhanced "Main Pages" for specific subjects. Portals are meant primarily for readers, while encouraging them to become editors of Wikipedia by providing links to project space. Portals are created for encyclopedic topics only and not for article maintenance categories. -- Wikipedia: Portals Page
A stub is an article that, although providing some useful information, is too short to provide encyclopedic coverage of a subject, and that is capable of expansion. Non-article pages, such as disambiguation pages, lists, categories, templates, talk pages, and redirects, are not regarded as stubs. -- Wikipedia: Stubs Page
A WikiProject is a group of contributors who want to work together as a team to improve Wikipedia. These groups often focus on a specific topic area, a specific location or a specific kind of task. You can join a WikiProject or simply look for articles to work on using their main page. -- Wikipedia: WikiProject Page