Responsive home page with sign up form using BEM and JS

What are you most proud of, and what would you do differently next time?

I'm happy because I'm feeling more and more comfortable with HTML and CSS. On the other hand, I don't really understand JS. I've just come out of an intensive training course and we concentrated on frameworks. I've forgotten basic JS and DOM manipulation. I really need to go back to the basics.

What challenges did you encounter, and how did you overcome them?

DOM manipulation, basic javascript, function creation, code organization.

What specific areas of your project would you like help with?

I think I've met the challenge, but I'd love any advice on how to get better at JS, even if it means starting from scratch.