someone needs to tell me how to add more pictures and how to make them bigger!!!!! I can only figure out how to add one at a time and they are small.....HELP

So yeh I have no clue what I am doing, I don't even know how to put pictures on facebook much less a blog. I also hate writing, but everyone that I know that has a kid has a blog. So since Beckham is about to arrive I thought this would be a good time to start blogging.....well I guess we will see how this goes.....