R.D.
It takes LOTS of dedication to make money. I have tossed around the idea also, and have asked my favorite blogger(s) many questions. I have learned it is a labor of love. If you are doing it to earn money, you will be sorely disappointed, at least at first. One blogger that I have asked the most questions told me she has been blogging for almost two years (and has followers from other sites she used to moderate), and most of the time she barely makes minimum wage (if she's lucky!). She blogs 60+ hours a week to make that much. She blogs DAILY. That is key. In order to get a following, you MUST post daily.....the more times the better! She has had one (or maybe two?) vacation day(s) in the entire two years...and even then she had posts in the 'cue' ready to go so her readers still had something to read that day!
If you find a nitche, if you have something unique to say, if you have a new idea or point of view, if you could be the 'first' at something so other bloggers will want to follow, then you *might* make money. I don't want to be Debbie Downer here, just realistic. If you want to blog just because you have something to say, you want to share yourself, your opinion, your family with the WORLD, then go for it! If you want to make a living at it, all I can say is BRAINSTORM!!! Good luck.