Make sure your text and background has the proper contrast. There's evidence showing that white text on a black background is easiest for most people to read, but other colors are fine so long as they're readable. Also keep in mind that people with visual impairments may not be able to read your site if the contrast is poor. Check to see if your site complies with various contrast standards using the tool at http://snook.ca/technical/colour_contrast/colour.html .
Don't use OnExit popups on your website. This tactic is mainly used by internet marketers who are trying a last-ditch attempt to get a sale. Word about these kinds of popups get around, and they will kill your reputation as a marketer. Mozilla has even taken steps to suppress the text on these popups, citing security risks.
Make sure you put your website through the NoScript test. Try downloading the Firefox extension and activating to make sure your website is readable. While you may need to have some scripts running, you do not want to see a completely empty website if they are turned off.
Avoid creating user interface (UI) controls that mislead your visitors. These controls include elements, widgets and more that create an interactive experience, such as a link, drop-down list or button. You do not want to make visitors think that clicking on an underlined word or phrase for example, will lead to a new page if it is not actually linked to something else. When your visitors have expectations of something working a certain way and it does not, they are more likely to assume there is something wrong with your site and leave.
Choose your web host carefully. Some hosts require you to link to them, while others may force you to install their pop-ups. You should also test their performance using one of the many tools available for free online, as you do not want to host with someone who is consistently slow or crashing.
If you have never designed a web page, try using pre-made layouts. These can easily be found online for several blogging web sites like Blogspot or Tumblr. Having an interesting layout will draw attention to content and give the site a professional look. Just make sure your layout is appealing to your target audience!
Use ALT tags for your website. This allows everyone to gain access to the intended information. You can also optimize links further if the images you have are shown as links. And most importantly, search engine bots need to see the descriptions through ALT tags in order to help your search engine ranking.
After you've read these tips, you may begin practicing immediately after getting a demo or free web host. It will get easier with each passing day, and you will master the basics. Soon you'll be ready to begin designing websites that people will love. Follow these tips and keep learning to become an expert.