Congratulations on your new machine! What fun! I got my Janome The Heart Truth machine in October and I love it!
I agree with FancyFoot, invest in a quarter inch foot. I bought the Janome Quilt Kit which included a walking foot, 1/4", open toe, and free motion foot.
And you can use Class 15 bobbins which you can get at Jo-Ann's.
Have fun with your new machine. Doesn't it sew like a dream?