One more thought... We have a couple longarm quilt guilds in our area. The one at our shop is free, and owners of all brands are welcome. Your local shop may have one if they sell longarms, too.

Lucky you...there are a ton of online videos to get ideas but more importantly just practice...and have fun.

watching the u tubes help also doodling on paper over and over the design you want than try it on the machine it take practice to get good at anything

Cloth panels make great practice pieces. You can find lots at JoAnn’s Fabric with children’s themes. You can outline or fill in the shapes. You can also add borders and practice feathers. These quilts make great gifts or donations.

I think that there are as many quilting books as there are quilting design books. Try the library and see what you can find.
There are videos everywhere on the web about it too. One I enjoyed the other day was on a sewing with nancy episode. She has the videos on her site for watching free. Just go into the video section and peruse the subjects. You will have fun.

Buy a couple of easy pantographs you can follow from the back of the machine with your laser light. Easy patterns would be those without exact repetition of shapes (like a repeating Fleur de lis or a repeating geometric shape). Pick something with flowy lines and preferably not alot of points. (When you are first starting sometimes you get a buildup of thread on your points because you don't hit them and bounce off them quickly enough.) Florals are good because every flower is different in nature and your flowers will look great even if you don't follow the lines well. Remember not to hold your breath and to relax your shoulders. Have fun!