Submit articles and press releases to online AND traditional newsletters and magazines at least once a month. Visit NewsGroups as often as you submit press releases. Post some helpful information and you may learn a thing or two in the process. Keep the amount of graphics on your web pages to a minimum. Web surfers seem to be a very impatient lot.
Text loads much faster than gifs and jpegs.
Don't let a single idea slip away. Keep a running list. Take a few hours every week to just surf the web. Focus on learning something new each time. Internet Marketing takes on many faces.