What types of tips are you looking for? Blogging in general (i.e. how-to), marketing the blog, commenting tips, etc.?
One good place you may want to bookmark is
Darren Rowse's ProBlogger. It may take some effort to keep up with when you first get started, but when you use a feed reader, it certainly makes it much easier to scan.
As for what you should do now...write. If you're running low on ideas, consider the questions you receive via e-mail. Instead of only responding via e-mail, polish up the answer and blog it (I've used that to save my butt more than a couple times LOL), think about something in your industry that irks you -- it could be a misconception or a myth that continues to propagate -- and set the record straight, or even blog about current events/news in your niche.
For WordPress bloggers, I wrote an article a
very, very long time ago about what to do once the installation is complete. Chances are you've already made these changes, but in case you haven't, feel free to read
You've Installed WordPress, What Comes Next?
And, of course, if you have any specific questions, we're all more than willing to help. Just ask.
~ Teli