Above all else, Wikipedia is an encyclopedia. This means that items in Wikipedia have to be important enough to be considered encyclopedic.
A topic is notable if it has been the subject of multiple non-trivial published works from sources that are reliable and independent of the subject itself and of each other. To be included in Wikiapedia all topics must meet a minimum level of notability to be included in Wikipedia. This ensures that there are enough sources to write a verifiable, encyclopedic article about the topic without making anything up.
What Wikipedia is not: In addition to the notability criteria described above, the entry must also be encyclopedic in nature. Items such as FAQs, video game guides, memorials, instruction manuals, directories, lists of links, advertising, self-promotion, and dictionary definitions are not encyclopedic and will probably be deleted.
Does your proposed article meet the notability requirements?
My article is about a notable and encyclopedic subject
My article is about a subject that may not be notable (what can I do?)