Couple things that will make finding help easier:
1. Designing ≠ developing so it's not clear what you need help with. Web design as a term for website creation is pretty out of date. That references a time in the late 90's/early 2000's when developers were called web masters and designed, developed, and maintained websites. Now these responsibilities are broken out among whole teams.
3. front end web coding language is html. html 5 is just the most recently recognized standard of that language. There are a number of other languages used in conjunction with html on the front end and a few different languages used to create the back end structure.
What it seems like you need just based on the lack of knowledge is a "full stack" web developer, meaning someone who can do the front and back end of the site you want.