Keep an eye on the forum over the next couple of months sondra - some of the folks who are more familiar with the various design programs are planning to put together some very basic beginner tutorials for a couple of different things that you can try, and as far as engraving…that information will come with the Glowforge in the User’s Manual, and it’s super simple. They will actually walk you through several basic projects to get you started.
If you want to start downloading some free files and fonts to try on the machine, start by following the links in these threads, and download and save as many as you are interested in, to get ready for when the machine arrives: