About web development and building app

Question

1.Which is must i priority first if i try to make a web (HTML, CSS, JavaScript or what?)

2.I try to make game for android also... What language & engine must i use?

Answer 1

1. Take the sololearn web development course. Thatll be the order.
2. I think Kotlin but dont quote me on that 🤔🤔🤔