Yes. I agree with mburridge, you should at least have a knowledge of PHP
and WordPress coding standards.

WordPress has default twentythirteen to fifteen theme included, open those files and try to understand the structures codes.

You can also google for “wordpress cheat sheet pdf”.

There’s a plugin like “Visual Composer” you may find helpful for designing pages without coding. A theme called “enfold” is very easy to manage can help you design your websites.

You can also [Link redacted per forum rules] if you need help for your projects.

Good luck..