Scales and Intervals

[eastVind]

Hey Folks,
happy to be here
Hope I found the right place for my question.

It's about Scales. I felt like I am long overdue with learning scales. So I wanted to try it.
I read a bit into it and found that those are the most basic scales with their steps:
Major: 1 - 1 - 1/2 - 1 - 1 - 1 - 1/2
Minor aeolic: 1 - 1/2 - 1 - 1 - 1/2 - 1 - 1
Minor harmonic: 1 - 1/2 - 1 - 1 - 1/2 - 1+1/2 - 1/2
Minor melodic: 1 - 1/2 - 1 - 1 - 1 - 1 - 1/2

So far so good. But it isn't so easy for me to memorise all these steps and half steps. So I wanted to understand it in Intervals. This is what I came up with

	Dur	Moll aeolic	Moll harm	Moll melo
Perfec Unison	X	x	x	X
Second Minor
Second Major	X	x	x	X
Third Minor		x	x	x
Third Major	X
Fourth	X	x	x	X
Fifth	X	X	x	X
Sixth minor		X	X
Sixth Major	X			X
Seventh Minor	X	X
Seventh Major			X	X

So basically the minor Third makes the scale Minor.
The Major Second, Fourth and Fifth are common to all scales.

So the most difficult thing is to remember which minor scale has a major/minor sixth and seventh.

Is that a reasonable approch?
Is the table correct?

I also noticed that there is not scale that has
minor third, sixth minor and seventh major.
Is the combination of sixth minor and seventh major rather used in Major-Scales?

Thanks for the feedback

 

[happyrat1]

Here is the traditional method of learning key signatures as applied to chords and scales. THIS is all you really have to learn.

https://www.youtube.com/results?search_query=circle+of+fifths

Gary