Denise, I agree that the icons can be confusing, I still find that I sometimes need to refer back, but the more you use them the more familiar they'll become.
I stitched out quite a few of the built in embroideries - some are better than others

- I just used scrap fabric and what ever thread I had. This is part of the learning process and is neither wasteful of time nor resources. I have never regretted time spent in this way; as far as I'm concerned learning-by-doing is the way for me.
Just enjoy the process....