simplelist: If you had only 3 blogs to read on bloggingThere may be tens of thousands if not thousands of blogs on blogging, all aimed at helping you success at blogging and make some money on the side. Allow me to save you from the 'information overload' of having to scan billions of rehashed articles.
Here are the three blog you need to read often to tone up on blogging tips. These blogs have been around for quite a time now.
Performancing http://performancing.com/ - a great group blog
Problogger http://problogger.net - Darren Rouse is always a great read
Blogherald http://blogherald.com - a classic blog where some really expreinced bloggers write, including Lorelle VanFossen.