Virginia,
I would agree with most go through a dealer. You may pay a little more but you will get more support.
I have taught many teens to sew. The machine I love for that has two sewing speeds. One is super slow and the other is regular speed.
Even my young Grandkids use it on "turtle" diagram speed.
Good luck you Will know what is best for you after checking out several. Make sure to take notes. Take your time to digest all your information before you choose.
Good Luck
Dawn227
Rochester NY