Thats it even after a couple of years since I started to try and read properly (I am still very much a novice) I return to this tool just to sharpen up the note positions on the staff in my head, used to take me ages to get a decent score, this time I got wizard on my first go and all the others until the .89 came out of the bag, I never dropped even to master for one but it did take about 10 goes to get the great wizard though which is less than 1 second btw.
Have fun, next thing you know you are onto note durations then ties and slurs, triplets and 16th triplets and rests!