Hello Robin and Welcome to the wonderful world of machine embroidery (ME) and AnnTheGran (ATG). ME is the most fun craft, it is beautiful, and creative!
Ditto to everything Pattiann said and a couple things more - Congratulations on your machine, it is a really great one!! May I humbly suggest that you read two of my writings?? The first would be to read the forum post for the PE-700II machine. While it is a different machine, the process is much the same and there are tips that will be valuable for you.
Next, you may want to read my Blog Post "What I wish I had known when I began Machine Embroidery." It is also full of tips that will make your transition to the ME world. Threads, needles, stabilizers and designs are just the beginning. Believe me when I say that we are all still learning. There is much to understand so that we can have projects that we are really proud of and the learning can be frustrating - but you already figured that part out. . . .
I recommend that you read topics here at ATG that sound interesting to you, then play with your machine. When you finish with that, read some more. We all welcome your questions here at the Forum and happy to help (see Pattiann's excellent info). But you can find many answer right here at ATG before you can ask. Many sites have some of this and that, but ATG is the best site for help, learning and excellent information.
Enjoy your new craft and show us some of your projects. Don't forget to include some of your problems, we want to help.
Pat, The Avid Embroiderer
If you are interested in selling your projects, you can determine your costs and profits quickly with my Spreadsheet.
If you want a lot of great information on working easier, faster and more confidently on your computer, check out my Tips and Tricks.
If you want to see my pashminas (that I successfully sell retail) check them out here. I also wholesale them.