(not a rant) Knowledge seeker XD

I'm about to start my life as unemployed/fresh grad , and I'm still not sure if my coding was good or right (proper coding). But I already have an experience on creating Android App (Java) and MySQL as database , Web Dev (HTML, CSS, Javascript, PHP, MySQL database) implement plugins like JQuery , Bootstrap , Chart.js , and DataTables , basics of Python , GIT ,and understanding of OOP.

I'd like to know where I can learn proper coding and good practices , where I can solve sample machine problem , learn different programming languages , and tips that might help me to be better.

note: I already do some research about this topics , I just want to get more answer as much as possible , Thank you :)

May the bug/s be fixed by you.