I have learned it from products of German experts, which probably would not help you at all.
I started with a simplified version (book on general ruleset with exceptions) and worked my way through 10h videos of complex corrections explained. Then I started falsifying so-called youtube experts for internalizing the ruleset. Because if you know where others make mistakes, your counting skills increase a lot.
I have learned it from products of German experts, which probably would not help you at all.
I started with a simplified version (book on general ruleset with exceptions) and worked my way through 10h videos of complex corrections explained. Then I started falsifying so-called youtube experts for internalizing the ruleset. Because if you know where others make mistakes, your counting skills increase a lot.