A couple things you may need for your blog

A hit counter. If you look at blogger forums a lot of new bloggers are always asking how they can tell how many people view their blog. Well there are a few of them out there, but the one I use is StatCounter.com. It is free to use, and pretty simple to step.
Another thing you will need is a spell checker if you don't already have one. Even if you are very good at spelling, you will probably slip a few times. A spelling mistake looks very bad. You can download a free spell checker to your web browser at this site. IESpell.com It only takes a minute, and can help you make your blog look much more professional.