I am not a hardcore anki user but in my experience the trick is to avoid converting learning materials to anki, convert learned materials into cards. first lear

I am not a hardcore anki user but in my experience the trick is to avoid converting learning materials to anki, convert learned materials into cards. first learn what you want to learn inside out, make some examples for yourself then try to convert your knowledge into a card. In this way you will know exactly what you should write down on the card.