Finally, a question I can answer. Nearly every publication has a submissions section in small text at the bottom of a page. Where it is exactly depends on the publication, but the more often you scan for them the easier it will be to find. Often, there is information that is more comprehensive available on the publication website. Again, you may have to search a bit, but I promise it is there.
While some publications require a query, many do not. The most important thing, aside from careful attention to submission instructions, is to review past issues of the publication and ensure that your tone, style and subject matter of your story or article is attuned to what has been published previously.
Sites like Duotrope.com and HeyPublisher.com can help you may help you locate publications in addition to allowing you to plan and organize your submissions. Good Luck and remember rejections happen, don’t let it stop you. Keep writing my friends!