Hi Ulrich,
I took a look at your site and I can tell that you have worked very hard on it. I completely agree with what James had to say, but I will add a few things.
What is your site about? It is not apparent at first glance and that will cause you to lose visitors. Your title does not make that obvious, nor does your description "Resource for the masses." What kind of resource, which masses?
Where are the tutorials? You have taken the time to create some very useful tutorials and they are difficult to find. You even have an FAQ asking where the tutorials are. That should tell you to get those tuts out there and visible. "Handy Hacks" might be cute but "Tutorial" gets right to the point.
Why are there off site links on your homepage? I see you have "Links of interest" on your left navigation menu. Maybe they are your sites, but if not, are you sure you want to send viewers away before they have seen what your site has to offer?
I had a look at your HTML tutorials and they seem a bit overpowering visually. What I mean is even though you have graphics the page is full of text without enough visual breaks. Maybe you could add some extra line breaks and some bold subheadings to break things up a bit.
Take a look at
this page on Lisa's site. It is a very text heavy page with only a video to break things up. See how she has made bold subheadings and bold text, links and italics to provide visual relief? I think it would help if you worked on making your site more
One other thing I noticed, this page has apparently has CSS issues you may want to correct.
Remember it takes time and a lot of content. You are off to a great start. Hope this helps.