Landing Page - Critique Wanted

So this is my landing page project for FCC. Any help or feedback provided would be much appreciated!

Couple of Questions:
I put my media query at max-width 768px, and I was wondering how many breakpoints is typical for a finished product?

Where should I be hosting my images for projects on? I used GitHub as my links for my images, but am looking for recommendations for image hosting sites, ideally that are free.

Thank you again!