Purchase a starter calligraphy set. Many hobby and art supply stores sell sets ideal for beginners. These sets often include a booklet to help get you started. A typical calligraphy set for beginners will consist of several pens and various nubs and ink refills.
Get familiar with the various styles of calligraphy. There are many styles you can practice. You can also try creating your own styles. A good calligraphy book will give you an overview of the history of calligraphy and teach you many of the styles. You can purchase a calligraphy book in a hobby or bookstore. You can also find much of the same information online, free of charge. Though it may take a while to learn all the types of calligraphy, learning just a few basic pens strokes is all you need to start having fun.
Read the instructions before you begin. Your calligraphy set will come with instructions. The instructions for beginner sets are usually simple. Your pens come with different size nubs; you'll need to remove the nub and place ink in your pen. The ink comes in cartridges that you place in the barrel of the pen. When you screw on the nub, it pierces the ink cartridge, and you're ready to write.
Use the starter booklet that comes with your set to practice. The trick to getting good calligraphic letters is in the way you move your wrist. Start with the tip of your pen on the paper, with your pen at a slight angle and begin drawing a letter. As you move through the formation of the letter, twist your wrist slightly one way or the other; you'll see the ink line thin out or widen. This is the basis for calligraphy lettering. Play around with it until you gain control over the width of your lines. You'll find it's easier than you think.