You definitely need an embroidery program - my dealer didn't carry one so never told me about getting one and it makes all the difference of putting together a group of designs and customizing. My ME is a Husqvarna/Viking so my program is just for those machines.
Everyone has given you great advice. Mine is to be patient with your machine and yourself. Feel free to ask all the questions you have here if you like. My friend just got the Brother PE770 and is having fun learning it. She has relied heavily on the YouTube videos mentioned above.
When I got my machine the dealer made it look so easy and I was going to go home and embroider everything that did not get out of my way. Well, I wanted to apologize to every quilter/embroiderer for every thought I had before thinking they took the easy way out using a machine instead of doing it by hand. There is a lot of learning, planning and more to machine embroidery than meets the eye. But it is so fun and the results can be very exciting.
Have lots of fun! We are all looking forward to seeing your creations.