I found some great books at the library!  These are really helpful for me with this topic.  I prefer these to most of the other forms of information, because while I’m baking I can have them on hand for reference.  It’s a little more difficult to do that with websites or videos, though not impossible.

The Essential Cake Decorator: a Concise Course in Decorating Techniques by Janice Murfitt.  – Has a lot of good information about cake baking and decorating.  LOTS of color pictures, which is very helpful.  Reviews different icings and decoration techniques, like making flowers out of marizpan and sugarpaste.

Cake Decorating by Elaine MacGregor – Basic cake information including fillings, icings, decorating techniques, decoration making – including elaborate decorations, and recipes and instructions for special cakes.

Cake Decorating for the First Time by Jaynie Maxfield – As stated in the title, this book is best for beginning cake decorators.  Lots of color pictures and easy step-by-step instructions.

The Wilton Way of Cake Decorating, volume 3 – This is a book dedicated to piping.  Very informative with lots of color pictures.

I think I’ve now found plenty of information for my project!