Recommended · for some experience
How to Solder QFN MLF chips Using Hot Air without Solder Paste and Stencils
Why people recommend it
A demonstration of soldering a leadless QFN chip with a hot air station, used as a guide by people hand assembling fine pitch surface mount parts.
Watch for: Assumes flux and a hot air tool; one viewer followed it without solder paste
In their words
This Video shows it for a QFN component -- for a simple component like a connector you should not even need flux.
Simon Richter on electronics.stackexchange.com, Jun 2016. CC BY-SA.