I´m trying to do an simple Wordpress-App for my Homepage.

I started using Appery.io, which is actually a good environment for a non-programmer.

But I wonder if anybody has experiences in hooking up a Wordpress Site to an App by Appery?
Where would I start?

What my basic needs are:

1) Read the Articles
2) Comment on Articles directly in-App
3) Push-Notification about new article/comment