It's all new to me

Where do I start? I know nothing about "blogging". It's a word I looked up on the Internet and to my surprise I find out it's all about writing. I have been trying to write a book for a long time now. However, fear has stopped me. You know, the fear of the outcome. What if people hate what I write? What if I spent all this time writing and find out not one person wants to buy my book? What if the fact that I am terrible at punctuation will make writing my book impossible? What if......? So I decided to blog my book. Is that how you say it?
You will have to excuse me, however, I do not know the first thing about blogging. Like for instance, what is the label box for at the bottom? Nor, do I know the first thing about writing a book. But if I don't try this it will bother me for a long time. You know, back to the "what ifs".
I will try to write a new page of the book each day. I can't promise I won't miss a day here and there, however, I will try my hardest not to.
I don't know if I am suppose to start by telling you about myself or not. So for now I will just write the book. If I find that there are people that are interested in what I am about then I will share.
Please feel free to leave me feedback. Because that is what I am going to base my decision on. What decision you ask? Do I become a real author and start writing books or do I stick to collecting notebooks of all my ideas for books and movies?
Now comes the hard decision...which book should I write first? Hold on a sec, I will flip a coin. Ok the first book I am writing is my book titled "I Have Two Faces". Wish me luck.....