WordPress Recipe Settings of WordPress.com site
WordPress.com site has almost no need to configure especially. Only you have to do is that put a site icon on your desktop and mobile.
WordPress.com
WordPress Recipe 
WordPress Recipe Server Settings of WordPress.com
Server setting of Wordpress.com. It's almost no need to configure. It has a password-less environment.
PC Recipe How to Use Jetpack-Website Builder
This is an excellent mobile app works with Jetpack, the All-in-One plugin. It is very useful for a small edit.
Advance Preparation 7. Security Measures
This is the security from hardware to software. At the ending part, there are the countermeasures against hackers. Please refer to it.
Advance Preparation 5. Select your Hosting Service
Select a web hosting service for WordPress. If you don't mind the cost, WordPress.com is supposed the best, but there are a lot of recommendable web hosting services.