Ok so I've been doing research on diminished scale theory and I feel like I'm going in circles. I know there are "half whole" dim scales and "whole half" dim scales. I know that there are "half" dim scales (with a circle and slash symbol) and "whole" dim scales (with a circle symbol). I know that a Locrian mode is similar if not the same as one of these scales. I know that there is a scale that has 8 tones in it. I also know that one or more of these dim scales can be played over Dom. and Min.7b5 chords well because they share important tonal notes. I've asked my instructor some questions but I feel even more confused. So my question are: 1.) How many diminished scales are there? 2.) What are their intervals? 3.) What chords are they good to use with? 4.) How are they used? PLEASE HELP!!!