There are many different options. It all depends on what kind of design style you prefer. Creating a creative design for the site isn't easy, but now there is a lot of useful information on the Internet. For example in this article 10 Reasons You Should Pay Attention to UX you will find a lot of tips and descriptions. It's good that professionals share their experience and help beginer designers to become better. I like to read such articles, but I'm not a designer, it usually helps me to learn about new trends in design and to understand what needs to be changed in my website.
I'd go with a good SEO & speed optimised WordPress theme to get yourself started, some are very good and free! The design will fall in place based around the template if you already have a slight idea of what you're after.