In my opinion, learning MySQL goes hand in hand with learning PHP. If you learn the two together, it will be much easier than trying to learn one then the other.
I recommend you get your hands on a copy of Sams Teach Yourself PHP, MySQL and Apache in 24 Hours. It's a good book that will teach you the basics, and get you on the road to doing what you want to do.
The only other way to do what you are asking is to use files to store your articles. In my opinion, that is not the best way, and using MySQL is just about as easy to learn as PHP file access commands. Plus, you'll have the ability to store as many articles as you want, and make them searchable, as Zabby has mentioned.