I'm setting up a blog on my site and I walked through part 1-3 of the tutorials. I thought I did everything right and I'm not getting any error messages. I'm also not getting anything to show up on my blog page after typing a message in wbloggar.

Where do I start looking for mistakes in the setup?

I think there may be an issue with TimTab refreshing properly after a blog post through an external editor. I've never gotten it to work and have to clear the FE cache to get the posts to display. Maybe setting the page as not cached would help?

I'm assuming that you have the proper TYPO Config settings for which pages trigger a FE Refresh. If not, you may want to check the TIMTAB manual.