Fun handwriting can make a minibook much more personal if you are making one for a friend.
This page contains links to fun handwriting lessons -- calligraphy, doodling, and zentangles (which are not a form of handwriting but fun).
Practice makes perfect!
Calligraphy Lessons
Learn Calligraphy -- several lessons to print and get you started.
Discover Hobby -- scroll down, four printable alphabets to get you started and resource list as well as a few articles.
Calligraphy Learn -- articles, pictures of tools and positions, free alphabets and more.
The International Association of Master Penmen Engrassers and Teachers of Handwriting --
lots of info here along with lessons and tips.
DIY Fun Handwriting style:
DazzleDIY at YouTube has handwriting technique video instructions. She also has some video tutorials on creative art that can go into your mini-book.
Make minibooks and include a collection of:
Doodling
Doodle Lettering
National Doodle Day USA (May) -- celebrated worldwide
Zentangle
Zentangle.com -- lessons, tips, inspiration