How do I use my website skills with construct 3?

I am studying mysql and php and html at the moment, im looking for ways to save some data to the browser then use my website html and php skills to add or delete from database(SQL) , im trying to find out how to use a timer, and how to add the experience the player gets in-game to a rooster page of his user.

also, any tips on addons with features like DB, or auth features ?

edit: i have used construct 2 since 2012, i know my stuff, i just need to know more about construct 3.