Okay, before you do anything else, you need to work ALL THE WAY THROUGH the “first prints” tutorials on the support site (if you haven’t already). That’s going to make you a lot more comfortable with using your machine and getting the best results from it. You can find them here:
If you’re looking for a source for fonts, there are sites like wordmark.it, creativefabrica.com, and fontbundles.net that sell them pretty cheap, and release a free font periodically. The main thing to look for is (if you’re going to sell what you make with it) that it comes with commercial rights. The sites I listed all allow commercial use.
As for “burnt or doesn’t cut thru,” learn to run a test strip on your material to dial in your settings exactly. Here’s a post to get you started:
You don’t have to be computer savvy to do this – just willing to learn and keep trying. You’ve got this! 