Learning about blogging

I have just been researching how to blog and I'm still a little unsure. I am really enjoying my writing at the moment and I kind of wanted somewhere to vent all my thoughts. So, I should apologise now if I become addicted to blogging. I have read hundreds of blogs over the years and think I have some idea of what to do, however it may look dull...dull...dull as I haven't figured out how to make everything look pretty yet!