Short. Should not take more than 10 minutes to read.
Succinct. Verbose enough to cover the main concept, but absolutely no fluff or fillers. It’s okay to give extra attention to parts that are confusing.
To the point. Focus on the core concept, and don’t get carried away by the details
Has diagrams, if they improve the explanation.
Intuitive and Easy to Understand. Don't use jargon that the reader will not understand without defining it first.
Involve the reader. Write from their perspective. They should be able to feel the urge to go ahead and implement something once they are reading your tutorial. Use “you”, “your” etc. as much as you can.
Simplify your sentences. Try to cut out anything that shouldn’t be there.
Concrete, real-life examples. Not fictitious or made-up examples.