Not all articles are the same-- here are the different types you might find, and pros/cons of using each:
No one else will make sure you find credible/reliable information online except you, so be picky about it!
At the bare minimum, make sure you can identify the following things on a web site:
Here are some more in-depth questions you can ask yourself to figure out whether you're looking at a high-quality web site:
Why use books?
Books/e-books can the perfect source for authoritative, background information because they provide very detailed info about very big subjects.
Note: You can use print books from the UTEP Library (here's how); e-books are just as good as print books, but make sure you're connected to the Campus VPN before you try to open one, or you'll probably get blocked.