Just because you’re dealing with a scholarly discipline that’s usually reported in a style of dry pedantry is no reason why you shouldn’t write in good fresh English. — William Zinsser —
I always fall back to the boring style of — do this, then this, next that, and finally this. Tutorials and advanced concepts are more accessible if written like a person and not like a developer.
Tell a story, make it interesting, and draw the reader in.