To add a topic, simply click on the Add Topic action menu from the Wiki module.
Give your new topic a name and enter some content. Remember to use tokens when possible to cross-link articles as it will help preserve references even if the content is moved. See Tokens for more information. Make sure each topic has a unique name or SEO URL name to generate a nice short URL for your topic. Please see Customize editor for more information on how to make your editor more powerful.