New to this blogging thing...

Ok, so I've gotten on the bandwagon with the whole Myspace thing, then Facebook, so now I'm here. Everyone rants and raves about blogging, so here I am. At first look, I'm not impressed, but I am confused. So is blogging basically a page where I sit and say: Me, me, me, my family this, my children this, my husband this, here are some pictures, blah, blah, blah? And then people can comment on whatever I post? I need a tutorial. So any of you bloggers out there...school me please!