Calligraphy practice pads vary in content, line type and paper colour.
The novice will want a Calligraphy practice pad that gives pen and ink set up instructions. paper positioning tips, lines that include the 55 degree angle slant, practice letters to copy from in both upper and lower case, tips on how to join letters and write words and practice words to master.
Once that type of Calligraphy pad is mastered than pads with lines is all that is needed to continue along with your Calligraphy practice.
Pads with different paper colours allows you to try different ink colours so you can expand your creative lettering style.
Make sure you have a variety of practice pads for mastering your creative lettering.