Things to Do
Optimize your site
The three top complaints about webpages were speed, ads, and broken links. Speed and ads both had 60% of people surveyd indicate that these were a major deterrent. Web ads continue to get progressivly annoying, but the larger ones also increase the download times. Optimizing web sites takes the ads into account to keep your visitors from leaving because the page loaded an ad immediately, but left your content floating in cyberspace. To keep the download time of pages at a speed most visitors expect, maintain a size of about 30K.
Keep it simple
Use standard layouts. There are some that like to use 6 or 8 frames on one page. Other sites use a layout where you have to scroll to the right to read everything on the page (but you never have to scroll down). These layouts can be amusing, and you might think that they are fun to build, but they will drive your visitors insane. The reason that the 3-column layout is the most common form on sites and newspapers is because it is effective. You might think it's dull, but you'll maintain more visitors if you stick with something familiar that they can understand.
In design, be aware of the blank part of the page. Whitespace is not wasted space, it is a function of your layout. You should pay attention to the whitespace on your pages and how it affects how the content is viewed. Whitespace is just as important in a Web layout as it is in a paper layout
Use standard fonts
Serif for headlines and Sans-Serif for other content. If you've sstudied any kind of print design, this is probably the exact the opposite of what you learned. But the Web is not print. Sans-serif fonts are much easier to read on computer monitors because the screen resolution is not as high as in print. When you use serif fonts for normal text, the serif fonts can blur together on the screen making them hard to read. Your pages mean to be printed should use the opposite fonts (serif for headlines and sans-serif for text).
Also, limit the number of different fonts that you use. The best ways to make your site look amateurish is to change the font over and over ad infinitum. Sure, it's possible to do, but limiting your page and site to 2 or at most 3 standard font families is easier to read and is more professional.