Minor scales are directly related to major scales, with a few extra rules. Like a lot of things, they're easy when you know how. You're going to need to know major scales and key signatures to understand minor scales. Check out the links below the video...

Key signatures are easy...when you know how they work. This video explains what they are, how they work, and some patterns that emerge when you look at all of them. It also includes a brilliant trick to remember all 15 major key signatures!