Learn new technology through writing a tutorial about it
That's how we ended up with 1000s of garbage quality tutorials for android development. I was once looking how to save app specific data and all top 10 tutorials in google and DDG were saving data to userspace by creating new directory called something like 'myapp'. Years later Google had to create a series of tutorials with Udemy (as I recall) to actually tell people how to do things in a not stupid way.Please don't write tutorials about things you do NOT know. Newcomers will visit your blog and think you're an expert and do it this way.