Make sure your webpages aren't too long. You only get one chance to make a first impression, and if your most important content is "below the fold," it may not even be read. If you have a lot of related content that needs to stay together, consider breaking it up into sections and adding links to each section.
Don't use splash pages for your site unless required by law, and especially don't use a Flash intro. Most people just want to get to your content as quickly as possible, and don't care to look at useless splash pages. If you have some amusing content that you absolutely want visitors to see, integrate it into the homepage instead.
Be wary of web hosting companies who claim that they offer unlimited bandwidth to their customers. Usually there is something that is written in the small print that is far different than that. In many cases people end up having problems when it comes to fair use policies.
Let users cancel actions if they desire. An action can involve filling out forms, registering for email notifications or newsletters, or browsing the site for various topics or archives. If your visitors can't easily change their mind and back out of registering for a site feature, they may feel forced to complete a transaction. This isn't good for your web traffic or your reputation.
Use shortcuts. Many aspect of webdesign are not as hard as they seem and have shortcuts on how to do them. You can even learn HTML codes that will allow for quick changes across all your pages without needing to redo them one by one.
Use images wisely. Bitmap images do not tend to fare well for internet use, and some GIFs do not work well with lots of color. Image size is important as well, as larger images may make your viewers have to wait for them to download. Choose smaller images, and use them sparingly to make your site more manageable.
Make your links obvious. Customers do not like spending time wading through your site searching for something they are interested in. Having a site map, as well as providing big, prominent links will help your viewer find what they are looking for without wasting time in a hunt. Lead them to your information.
Learning web design isn't as difficult as learning how to do open heart surgery. It doesn't require several years of education, and no one will croak if you do a poor job. If you can listen to advice, you can put together an amazing website.