You can pretty much quilt on any machine you can get the quilt through the throat. There are folks on here who have quilted queen size quilts on tiny little machines.
As a beginner, smaller quilts are easier to manipulate. A walking foot helps for any straight line quilting or even gentle curves. If you want to learn FMQ, make up practice squares and give it a go. There are many, many helpful FMQ videos on youtube.