Gladgrams,
You should have a users manual with your machine. It will have a section on embroidery. Sit down with your book at the machine and read and do word by word. It works! Some processes you have to do more than once before it makes sense. That's how I learned my Designer I in the beginning. As for the techie stuff like tension, density, resizing, that's another whole matter.
Just don't let it stress you out...not worth it. Just fabric and thread.