My First Blog: my thoughts on blogging

So yeah, here I am, doing my very first blog post. I'm a bit nervous, I must say, as I know people who do this very well and me being a first timer....well I don't really know what I'm doing. I guess I just write stuff here when I'm bored or have something on my mind, or want to get something off my chest. Am I supposed to expect people to actually read this?? I mean, who really cares what I think? Do people actually care that I am bored or want to vent about something? I also have to admit, I don't get the whole blogging thing. I'm being a follower....trying to follow this trend and keep up to date with life before my kid is born (yeah, i'm prego).
The funny thing is, being pregnant has already changed me in certain ways (aside from my ever-changing body) that I never thought it would. I mean, I'm starting to think of all these things I want to do before it gets here, knowing that I might not be able to do the same things once the baby has arrived. Not in a bad way......take this blog, for example. I started it because I want to be "up to date" with things, and this idea came from the fact that once my child is born and grows up, I know there are going to be things she far surpasses me on in her knowledge of technology (by the by, I am having a girl). I wanted to have this one thing (blog) that I could say that I started back before she grew up and blogs were outdated (will they ever be?). I guess it really doesn't matter. There are millions of people out there that don't have blogs and are doing just fine. I'm just trying something new I guess, since I only work part time and I want to feel like I'm doing something creative and lasting.
The other thing is, I used to journal a lot. I loved to write and see what I was thinking, and be able to articulate things that I could later look back on. The one down side to that was always having a fear that someone would read my journals, and think I was totally weird and crazy (which I very well may be). But still, some journals just aren't meant to be read by anyone else but the writer him/herself!
Yet I know that blogging is totally different in that all your thoughts and feelings are posted out there for the WORLD to see (that is, if they ever find you). That's another thing I don't get. Are you supposed to like send a mass-email out there for people you know to have your blog address, so they can visit it if they want? Or do people just blog, and if someone finds them, they find them? i guess there are no "rules" to blogging. you just do it, and if you want to give out your info. you do. If you don't, you don't.
The other reason I wanted to start a blog is that I like music and I like to write, and I like to write music! I've been in quite a dry-spell for a couple years now, and haven't really written any new good songs though. I thought blogging might get my creative juices going, just being in the habit of writing anything on a regular basis, even if its not necessarily "creative" or a song or whatever. I've heard that writing needs to be like excercise, you need to do it regularly to keep up your skills and to get better.
Anywho, this is turning into quite a long blog post, so I guess I'll stop now.
By the way, is the term "blog post" right? What do you say? I don't even know the terminology. O well who cares, it's my blog and I can do what I want!