Just do something! Load a practice piece - something that DOES NOT MATTER TO YOU, and go to town so you get the feel of the machine. It won't matter if you mess up or not. My first two actual projects on my HQ were child quilts for community service. They were far from great but a child in hospital will not judge me for stitchen not being perfect.
There are also some great classes on craftsy, and you can get videos on youtube. Happy quilting!