It's true, first impressions can often make lasting impressions to potential customers. Creating an appealing landing home page, along with appealing pages throughout your website, which are easily found and easy to navigate to, can give your potential customers extra confidence in your product or services.
The need for simplicity in a website design is often over-looked or disregarded by web-developers and designers. Some web developers believe you can get higher search engine rankings with a more complex, content full website, but this is simply untrue.
It really can't be over-stated that the ease of navigation and ability to find information is the single most important improvement you can make to your website.