Yes, they let you try it out. They will provide scrap fabric - they will show you all the features of the machine. Then when you are ready, they will let you sew on it. I have a baby lock Elllure and it is a sewing & embroidery machine. I love it - however I haven't done much embroidery on it yet. I am suppose to take a class on how it works, but haven't signed up yet. When you buy a new machine at a fabric shop, they will give you free lessons on your machine. My machine was on sale for about $1,000. Decide on a price you want to pay and then find a machine in your price range.
Ask lots of questions and when in doubt don't - that's my motto! Patti