I just built a new website for my business using WordPress and a custom theme (the7). It is a drag and drop with excellent tutorials. While I had a couple of things that really tripped me up, I reached out to the customer service for the theme and was able to figure out how to correct what wasn't working as I thought it should. I believe the theme came with six months of customer support from the theme developer, with the option to buy an additional six months for a small fee.

To find the themes, I used Theme Forrest. It is essentially a catalog for custom WordPress themes. Each gives you the ability to look at demos of sites built using those themes, examples of specific page types and information on how to build the page (is it a drop/drag, requires coding, etc).

Good Luck.