Create an Article

Create articles from the Knowledge tab to build your knowledge base.

The more articles you have the more realistic your development knowledge base. You can import multiple articles with .csv files; one for each article type. For information on importing articles, see https://help.salesforce.com/HTViewHelpDoc?id=knowledge_article_importer.htm.

Click the Knowledge tab.

You may need to click the plus sign at the end of your tabs and find the Knowledge tab in the list of all tabs available. You can add the Knowledge and Article Management tabs to an app.
Note
Click Create Article.
Select the Knowledge article type.
Create a title for your article, such as “Our company address.”
Write a description, this goes under the title in the search results.
Put your company address in the rich text area field you created in the last unit. Notice that the article is available by default to your internal users.
Click Save.

Salesforce Knowledge Developer Guide